@article{Santos2024c,

title = {Clove leaf essential oil Pickering emulsion stabilized by octenyl succinic anhydride modified waxy maize starch: An eco-friendly alternative},

author = {Pedro Henrique Santos and Paulo Henrique Camani and Monica Surek and Wesley Mauricio de Souza and Luiz Fernando Grespan Setz and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0927775724014043},

doi = {10.1016/j.colsurfa.2024.134540},

issn = {0927-7757},

year  = {2024},

date = {2024-10-00},

urldate = {2024-10-00},

journal = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},

volume = {698},

publisher = {Elsevier BV},

abstract = {Clove leaf essential oil (CEO) is renowned for its well-established bioactive properties, which makes it an element with high added-value, especially for the food and pharmaceutical industries. Nevertheless, its use is hindered by instability and limited water solubility. Therefore, this study aimed to overcome these challenges by developing a stable Pickering emulsion of clove leaf essential oil using octenyl succinic anhydride modified waxy maize starch (OSA starch) particles as stabilizing agent, providing an eco-friendly alternative to conventional surfactants. First, the experimental conditions for the development of two distinct emulsion were optimized using a Response Surface Methodology (RSM). As a result, slightly shear-thickening behavior emulsions were obtained, with droplet size from 1 to 6 μm, absolute zeta potential values above 30 mV, and an exceptional stability for more than a month. These aspects can be linked to the synergistic effect of chemical/electrostatic interaction between essential oil and OSA starch. Finally, both samples exhibited an outstanding antibacterial efficacy, with MBC/MIC values below 4, classifying them as bactericidal agents against some typical foodborne pathogens. Our results indicate that these Pickering emulsions have noteworthy properties that make them an additive with promising potential for application in the food industry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pinto2024,

title = {A promising use of Kimberlite clay on sustainable polyurethane foams},

author = {Roberta C. Pinto and Paulo H.F. Pereira and Lana S. Maia and Tadeu L.S.E. Silva and Maria Ismênia S.D. Faria and Derval S. Rosa and Daniella R. Mulinari},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0169131724002205},

doi = {10.1016/j.clay.2024.107472},

issn = {0169-1317},

year  = {2024},

date = {2024-09-00},

urldate = {2024-09-00},

journal = {Applied Clay Science},

volume = {258},

publisher = {Elsevier BV},

abstract = {The present study introduces a novel approach to incorporating Kimberlite clay (Kl) as a polyurethane foam (PU) filler. The polyurethane/Kl foam composites (PU/Kl) formulation varied in clay percentage (10% and 20%). The properties of both neat PU and PU/Kl foams were characterized by morphological analyses (OM, FE-SEM, and Density), chemical (FTIR), physical (XRD, and EDXRF), contact angle (WCA), water absorption, thermal (TG/DTG), and mechanical properties (compressive strength). Morphological analysis revealed that PU/Kl foams exhibited open pores and a heterogeneous dispersion compared to the uniform structure of neat PU. The infrared analysis demonstrated that Kl clay was a nucleating agent within the PU matrix, leading to PU/Kl foams with higher Density, hydrophobic characteristics, and greater crystallinity. The samples exhibited changes in thermal stability, showing a slight increase (PU/20%KI) compared to neat PU and indicating a substantial interaction between Kl clay and the polymer chain. The findings suggest that the incorporation of Kl clay enhances the thermal and mechanical performances of PU foams, making them promising materials for various applications, including civil construction, car interior accessories, lining, and oil sorption. The reduction in chlorine content in the structure of PU foams through the insertion of Kl clay was also identified, promoting the development of eco-friendly foams. This research contributes to a deeper understanding of Kl clay and encourages its broader utilization in PU foam applications.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2024,

title = {A novel starch‐based composite hydrogel enhanced by activated charcoal from the banana peel for water decontamination},

author = {Lana S. Maia and Paulo H. F. Pereira and Andressa I. C. da Silva and Talles B. da Costa and Daniella R. Mulinari and Derval S. Rosa},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/app.55685},

doi = {10.1002/app.55685},

issn = {1097-4628},

year  = {2024},

date = {2024-08-05},

urldate = {2024-08-05},

journal = {J of Applied Polymer Sci},

volume = {141},

number = {29},

publisher = {Wiley},

abstract = {The efficient removal of potential toxic elements (PTEs) from aqueous systems is an important challenge in water purification and industrial effluent treatment. Starch-based hydrogels have shown promise in this context due to their unique properties, such as high absorption capacity and water retention. This work synthesized a novel hydrogel with and without activated charcoal (AC) from banana peel (5 wt.%) and trisodium citrate as a crosslinking agent and starch to remove PTEs. These hydrogels were characterized by Fourier-transformed infrared (FTIR), scanning electron microscopy, TGA, XRD, water absorption, and zero-charge point techniques. Subsequently, the affinity of AC, neat hydrogel, and the composite hydrogel for removing Cr6+, Cd2+, Ni2+, Mn2+, Zn2+, and Cu2+ in aqueous solution was evaluated. FTIR confirmed a crosslinking reaction between the starch molecules and the crosslinking agent (trisodium citrate). Besides, the addition of hydrogel+5%AC altered the crosslinking process. Adding AC to the hydrogel composite increased crystallinity, thermal stability, and porous size. The highest removal efficiency of neat hydrogel and hydrogel+5%AC was for Cr6+, obtaining 83.2% and 98.5%, respectively. As for the AC, the removal of Cu2+ was satisfactory, with 80.4%. Thus, hydrogel+5%AC proves to be a highly viable adsorbent for posttreatment of wastewater due to its ability to efficiently remove PTEs.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilvaNeto2024,

title = {Enhancing PLA Filament Biocompatibility by Introducing ZnO and Ketoprofen},

author = {Thalita da Silva Neto and Lana S. Maia and Monique O. T. da Conceição and Maryana B. da Silva and Layde T Carvalho and Simone F. Medeiros and Maria Ismênia S. D. Faria and Bianca B. Migliorini and Renata Lima and Derval S. Rosa and Daniella R. Mulinari},

url = {https://link.springer.com/article/10.1007/s10904-024-03275-1},

doi = {10.1007/s10904-024-03275-1},

issn = {1574-1451},

year  = {2024},

date = {2024-08-02},

urldate = {2024-08-02},

journal = {J Inorg Organomet Polym},

publisher = {Springer Science and Business Media LLC},

abstract = {This study investigates the incorporation of zinc oxide (ZnO) and ketoprofen (keto) into poly(lactic acid) (PLA) filaments to enhance their biocompatible. PLA is widely used in additive manufacturing, especially in biomedical applications, due to its biodegradability and biocompatibility. However, its interaction with biological tissues can be improved. ZnO was chosen for its wound-healing properties, while keto, a nonsteroidal anti-inflammatory drug, was selected to provide local anti-inflammatory effects. PLA filaments were prepared by incorporating ZnO and keto, followed by analyses of their mechanical, thermal, and biological properties. The results showed that the incorporation of ZnO and keto did not compromise the mechanical and thermal properties of the PLA filaments. Compared to pristine PLA, the composites presented a slight improvement in strength. The incorporation of ketoprofen in the composite increased its thermal stability compared to PLA-ZnO filament. Concerning the morphology, when ZnO and Keto were inserted, the scaffold acquired a more robust structure, with well-defined porosity. In vitro biocompatibility tests indicated that the modified filaments exhibited lower cellular toxicity and improved cell adhesion and proliferation compared to pure PLA. Antimicrobial tests demonstrated that the filaments containing ZnO, at the evaluated concentration, did not exhibit activity against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, gram-positive and gram-negative bacteria. The combination of ZnO and ketoprofen in PLA filaments can enhance their biomedical applications, providing better biocompatibility without compromising the intrinsic characteristics of PLA. This work paves the way for the development of safer and more effective medical implants and devices.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pereira2024,

title = {Prospective Life Cycle Assessment Prospective (LCA) of Activated Carbon Production, Derived from Banana Peel Waste for Methylene Blue Removal},

author = {Paulo Henrique F. Pereira and Lana S. Maia and Andressa I. C. da Silva and Bianca A. R. Silva and Fernanda R. Pinhati and Sueli Aparecida de Oliveira and Derval S. Rosa and Daniella R. Mulinari},

url = {https://link.springer.com/article/10.1007/s10450-024-00485-4},

doi = {10.1007/s10450-024-00485-4},

issn = {1572-8757},

year  = {2024},

date = {2024-08-00},

urldate = {2024-08-00},

journal = {Adsorption},

volume = {30},

number = {6},

pages = {1081--1101},

publisher = {Springer Science and Business Media LLC},

abstract = {Activated carbon (AC) has recently gained increasing attention for removing various contaminants from water. AC obtained by agroindustrial waste is considered one of the essential adsorbent materials, which plays a vital role in processes of adsorption in water purification and wastewater treatment. Given the extensive use of this material, it is essential to understand its entire production chain and environmental impact. In this work, banana peel waste (BPF) was submitted at NaOH activation followed by pyrolysis at 600 °C to produce activated biochar (BFAC), aiming to remove methylene blue (MB) from wastewater. BFAC was characterized by TGA, XRD, SEM, BET, and FTIR techniques. The influence of dye concentration (10, 25, 50, 100, 250, and 500 mg L− 1) and zero point charge (ZPC) were investigated. Besides, a Life Cycle Assessment (LCA) was carried out to assess the environmental impacts of the developed process. BFAC presented a well-developed pore structure with a predominance of mesopores and macropores, which directly influenced the MB removal capacity. The highest efficiency for dye removal was 62% after 10 min to an initial concentration of 50 mg.L-1. The adsorption isotherms were well defined by Langmuir, Freundlich, and Temkin isotherm models. The Langmuir model represented the best fit of experimental data for BFAC with a maximum adsorption capacity of 49.5 mg g− 1. Regarding LCA, a prospective approach at the early stage of development was conducted to orient the transition from laboratory to industrial scale, aiming at providing a competitive CO2-based technological route. The scenarios proposed suggest that this route is promising either from the life cycle assessment or the circular economy perspective. Thus, BFAC can be considered an adsorbent with great practical application for post-treatment wastewater effluents to remove contaminants.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{FernandesPereira2024,

title = {Insights in the adsorption of eco-friendly starch hydrogel},

author = {Paulo H. Fernandes Pereira and Andressa I. C. da Silva and Rennan F. S. Barbosa and Valdeir Arantes and Daniella R. Mulinari and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s10450-024-00509-z},

doi = {10.1007/s10450-024-00509-z},

issn = {1572-8757},

year  = {2024},

date = {2024-07-28},

urldate = {2024-07-28},

journal = {Adsorption},

publisher = {Springer Science and Business Media LLC},

abstract = {This work prepared a class of starch hydrogel with and without lignin from sugarcane bagasse (5% wt.) and trisodium citrate as a crosslinking agent. The physical and chemical properties of the hydrogels were characterized by Fourier-transformed infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA), and X-ray diffractometry (XRD) techniques. Besides, the swelling degree and the pH of zero point charge (pHzpc) were evaluated. Hydrogels were tested for the adsorption of potentially toxic elements (PTEs) and dye (methylene blue) by chromatography and UV-vis, respectively. FTIR confirmed that the reticulation of the starch structure successfully occurred, while the inclusion of lignin promoted new interactions that increased pore size, swelling degree, and pHzpc of the developed hydrogels. The adsorption of cationic metals at pH < pHzpc showed low removal but presented complete adsorption of oxyanion chromium. Moreover, the adsorption of methylene blue presented removal higher than 90%, further enhanced by lignin presence, which presented an adsorption capacity of 99.4 mg.g−1 at 70 min. The hydrogels presented a better fit to the Freundlich isotherm model, indicating that removal is favorable. Thus, using lignin in the hydrogels can enhance their performance and be an alternative to developing new eco-friendly materials.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ferreira2024b,

title = {Nonlinear viscoelasticity of Melaleuca alternifolia essential oil Pickering emulsion stabilized with cellulose nanofibrils},

author = {Greiciele da S. Ferreira and Daniel J. da Silva and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0167732224011140},

doi = {10.1016/j.molliq.2024.125058},

issn = {0167-7322},

year  = {2024},

date = {2024-07-00},

urldate = {2024-07-00},

journal = {Journal of Molecular Liquids},

volume = {406},

publisher = {Elsevier BV},

abstract = {Pickering emulsions are suitable technological approaches to stabilize the bioactive compounds of essential oils (EOs) with economic interests for the pharmaceutical, cosmetic and food industries using atoxic and renewable stabilizers, such as cellulose nanostructures. The Melaleuca alternifolia essential oil (MaEO) is recognized for its pronounced antimicrobial performance, which has attracted your interest in developing eco-friendly antiseptic products. In this contribution, we report the nonlinear viscoelasticity behavior of MaEO-in-water Pickering emulsions stabilized by cellulose nanofibrils (CNF) using Large Amplitude Oscillatory Shear (LAOS) tests. The rheological characterizations by Fourier Transform (FT) rheology spectroscopy and Lissajous plots enabled the correlation of the viscous and elastic behaviors with the physical processes involving the deformation of the emulsion. Also, the internal structure of the emulsion was elucidated by fluorescence optical microscopy. Several findings relative to the effects of the shear deformation amplitude over the nonlinear viscoelasticity of the emulsified system are reported here, which are essential to the industrial processes used to develop technological products.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Perluxo2024,

title = {A Novel Sustainable Antimicrobial Polyurethane foam Castor Oil-based},

author = {Julia D. Perluxo and Andressa I. C. da Silva and Ronald P. Cardoso and Monique O. T. da Conceição and Fernanda R. Pinhati and Derval S. Rosa and Daniella R. Mulinari},

url = {https://link.springer.com/article/10.1007/s10904-023-02979-0},

doi = {10.1007/s10904-023-02979-0},

issn = {1574-1451},

year  = {2024},

date = {2024-06-00},

urldate = {2024-06-00},

journal = {J Inorg Organomet Polym},

volume = {34},

number = {6},

pages = {2488--2500},

publisher = {Springer Science and Business Media LLC},

abstract = {Infection control is a growing problem in places where hygiene is required particularly in hospitals. Most of the clothing and garments used to protect cross infections from patient to patient and patient to medical personnel possess barrier properties that resist not only the entry of blood and liquids but also microorganisms. The present study developed a novel sustainable antimicrobial polyurethane foam castor oil-based method using ZnO as a reactive filler with different amounts (0, 10, 20, and 30 wt%). To evaluate how the addition of ZnO affects the specific properties of polyurethane foam were used techniques by optical microscopy (OM), scanning electron microscopy (SEM), density, contact angle, Fourier transform infrared spectroscopy (FTIR), Thermogravimetry (TGA), X-Ray diffraction analysis (XRD), and Compressive strength test, respectively. The antibacterial activity of the optimal composites was investigated against Pseudomonas aeruginosa bacteria. Incorporating ZnO in the PU matrix caused an increase in the density of composites, which affected directly morphology exhibiting a higher number of cells with a small pore size as the amount of ZnO content was increased. FTIR results indicated that ZnO was hydrogen bonded to the PU foam chains, confirming that they act as nucleating agents. Also, the addition of ZnO improved the hydrophobicity, crystallinity, and thermal and mechanical properties of PU foams. PU/ZnO30% has ideal conditions and efficient antimicrobial activity, making it suitable as an antimicrobial hospital mattress to control hospital infections.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{MidhunDominic2022,

title = {Colocasia esculenta stems for the isolation of cellulose nanofibers: a chlorine-free method for the biomass conversion},

author = {C. D. Midhun Dominic and S. Maheswary and K. V. Neenu and S. Mohammad Sajadi and Derval S. Rosa and P. M. Sabura Begum and Mariya Mathew and T. G. Ajithkumar and Jyotishkumar Parameswaranpillai and Tresa Sunitha George and V. C. Resmi and R. A. Ilyas and Michael Badawi},

url = {https://link.springer.com/article/10.1007/s13399-022-03171-z},

doi = {10.1007/s13399-022-03171-z},

issn = {2190-6823},

year  = {2024},

date = {2024-05-00},

urldate = {2024-05-00},

journal = {Biomass Conv. Bioref.},

volume = {14},

number = {9},

pages = {10305--10318},

publisher = {Springer Science and Business Media LLC},

abstract = {The reuse of waste products is the green key to sustainability. The extraction of cellulose nanofibers from Colocasia esculenta stems is presented in the paper. The study proved that the waste biomass could be effectively re-engineered into highly valued cellulose nanofibers (CNFs). Cellulose nanofibers were extracted via a chemo-mechanical route. The pre-treatments included mild alkali hydrolysis (2% NaOH) and chlorine-free bleaching (peroxide bleaching in an alkaline medium). Cellulose Iβ structure was confirmed using 13C solid-state nuclear magnetic resonance spectroscopy and X-ray diffraction analysis. The elemental analysis of CNFs detected the elements, carbon and oxygen. The CNFs had a crystallinity and transmittance of 71.72% and 60%, respectively. Microscopic studies verified the elimination of non-cellulosic components and the fibrous nature of CNFs. Moreover, the fiber diameter of CNFs was 20–40 nm. Thermal analysis revealed good thermal stability of 335.8 °C (T50) for nanofibers. Long-term aids are numerous in eco-friendly technology. Developing an eco-design will support zero waste ideals, lowers carbon dioxide emissions, and encourages a circular economy. Owing to the merits of natural fibers, they can be adopted in various sectors including packaging, automobile, aerospace, electronics, biomedical, construction, and furniture.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Alves2023,

title = {A novel sustainable composite hydrogel containing nanocellulose to remove potentially toxic metals from contaminated water},

author = {Danrlei F. Alves and Paulo H. Camani and Alana G. Souza and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s00289-023-04986-0},

doi = {10.1007/s00289-023-04986-0},

issn = {1436-2449},

year  = {2024},

date = {2024-05-00},

urldate = {2024-05-00},

journal = {Polym. Bull.},

volume = {81},

number = {7},

pages = {5939--5966},

publisher = {Springer Science and Business Media LLC},

abstract = {Heavy metals deserve particular attention as they can cause serious health problems in living beings, such as genetic and physiologic diseases, even at low concentrations. Naturally, the need for techniques and processes to remove heavy metals from water emerges. Among those techniques, adsorption stands out because it is easy to implement, environmentally friendly, and inexpensive. This work developed a biodegradable composite corn starch-based hydrogels containing different contents of nanocellulose (CNS) (1, 3, and 5 wt%) as a reinforcement agent and chelating nanoparticles, with high adsorption capacity so that it can be used as an adsorbent in the removal of chromium and copper from contaminated waters. Starch-based hydrogel obtained crosslinked structure by modifying its spectra, crystallinity, and high thermal stability. Besides, a macroporous structure was observed, and the higher the CNS contents in the starch hydrogel matrix, the lower the specific surface area was verified, which can be listed with a greater crosslinking of the composite structure. For composite hydrogels containing different CNS contents, the hydrogel with 5 wt% nanocellulose showed adsorption capacities of 20.3 mg g−1 for copper and 3.5 mg g−1 for chromium. After the use, the hydrogels were biodegraded, showing a mass reduction of 79% (pure hydrogel) and 52% (hydrogel with 5 wt% nanocellulose) after 60 days buried in simulated soil. Thus, an environmentally friendly solution for minimizing wastewater contamination is proposed using a low-cost and eco-friendly green material.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Tischer2024,

title = {Green synthesis of an advanced composite membrane for the purification of water contaminated with potentially toxic metals},

author = {Ana Maria Tischer and Rafaela Reis Ferreira and João Gabriel Ribeiro and Derval S. Rosa and Alexandre Tadeu Paulino},

url = {https://www.sciencedirect.com/science/article/abs/pii/S2214714424004719},

doi = {10.1016/j.jwpe.2024.105239},

issn = {2214-7144},

year  = {2024},

date = {2024-05-00},

urldate = {2024-05-00},

journal = {Journal of Water Process Engineering},

volume = {61},

publisher = {Elsevier BV},

abstract = {Anthropogenic activities can lead to high contents of potentially toxic elements (PTEs) in soil and water. Thus, there is a worldwide need to find effective, environmentally friendly sorbents for remediating sites polluted with metals. In this study, we investigated how pectin/magnetite/pine sawdust (PE/Fe3O4/P) membranes serve as sorbents for the removal of Cd(II), Cr(VI), Cu(II), Mn(II), Ni(II), and Zn(II) from aqueous media containing multiple metals. Fourier-transform infrared (FTIR) spectra confirmed the efficient formation of crosslinked membrane chains during the synthesis of the biomass material. Thermogravimetric (TG) and derivative thermogravimetric (DTG) curves revealed that the biopolymer matrix remains stable at low temperatures and begins to degrade at temperatures above 260 °C. Scanning electron microscopy (SEM) coupled to energy-dispersive X-ray spectroscopy (EDS) demonstrated changes in the morphology of the biomembrane. Among the six PTEs tested, the PE/Fe3O4/P5% membrane had the highest sorption capacity for Cu(II) (∼43 mg g−1). The metal/membrane interaction was confirmed by FTIR, TG, DTG, SEM, and EDS after the sorption assays. The findings of this work indicate that green sorbents constitute a promising strategy for the remediation of aquatic environments contaminated with PTEs.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{NoelleC.Zanini2024,

title = {Enhancing the Cu (II) removal in water using functional hybrid membranes},

author = { Noelle C. Zanini and Rennan F. S. Barbosa and Alana G. de Souza and Rafaela R. Ferreira and Paulo H. Camani and Sueli A. Oliveira and Daniella R. Mulinari and Derval S. Rosa},

url = {https://ojs.wiserpub.com/index.php/SCE/article/view/4351},

doi = {10.37256/sce.5220244351},

issn = {2717-5758},

year  = {2024},

date = {2024-04-16},

urldate = {2024-04-16},

journal = {SCE},

pages = {299--319},

publisher = {Universal Wiser Publisher Pte. Ltd},

abstract = {This work developed hybrid EIPS/NIPS membranes of poly (butylene adipate-co-terephthalate) (PBAT) with nanocurcumin (NC) and/or Cloisite 20A (C20A). The dispersed phases were characterized by dynamic light scattering (DLS), ζ potential, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and fourier-transform infrared spectroscopy (FTIR), while XRD, SEM, FTIR, mechanical properties, contact angle, and copper sorption evaluated the composite membranes. DLS analysis indicated that the dispersed phases present a nanometric size distribution; ζ potential measurements showed low electrostatic stability, explaining the agglomeration effects observed. Pure PBAT membranes presented macro-pores throughout their structure, which showed a slight size reduction with the inclusion of NC and C20A. The membrane’s mechanical performance was affected by the presence of the pores that functioned as stress-concentrating defects, and the inclusion of the dispersed phases increased the elastic modulus and tensile strength, especially for PBAT/0.5% C20A with values 18.7 and 8.9% higher than those of pure PBAT, respectively. Hybrid EIPS/NIPS membranes showed a hydrophilic nature with all the contact angle measurements lower than 90°. The sorption tests using a high-concentration copper solution (1,000 mg/L) showed a removal of around 25%. These results highlighted the development of new eco-friendly membranes using NC and C20A as dispersed phases with the potential to remove toxic elements from water.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{BrunodeOliveiraSilva2024,

title = {Chitosan-based foam composites for hexavalent chromium remediation: Effect of microcellulose and crosslinking agent content},

author = {Marcelo Bruno de Oliveira Silva and Talles Barcelos da Costa and Paulo Henrique Camani and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0141813024012492},

doi = {10.1016/j.ijbiomac.2024.130446},

issn = {0141-8130},

year  = {2024},

date = {2024-04-00},

urldate = {2024-04-00},

journal = {International Journal of Biological Macromolecules},

volume = {264},

publisher = {Elsevier BV},

abstract = {Potentially toxic metal ions, such as hexavalent chromium (Cr6+), present in water concern the population's health due to their persistence, bioaccumulation potential, and high toxicity. Highly porous materials based on polysaccharides are promising technologies for metal removal due to their high surface area, biodegradability, and low toxicity. This study evaluated the effect of concentrations of microcellulose (0.5, 1, and 1.5 %) and glutaraldehyde (1, 2, and 3 %) in the adsorption capacity and mechanical properties of chitosan foams. The developed foams exhibited a three-dimensional structure with interconnected pores. Compared to foams without microcellulose, adding 1.5 % microcellulose increased up to 180 % in maximum stress supported by the foams and up to 135 % in Young's modulus. However, Cr6+ sorption capacity decreased with increasing microcellulose and crosslinking agent content due to the occupation of amino groups. Still, the foams exhibited a highly favorable sorption behavior, and the Sips isotherm model provided the best fit to the experimental data. The maximum sorption capacity reached approximately 1.4 mmol·g−1 at pH 4.0 and 25 °C. The foam structural integrity, enhanced mechanical properties, and efficient sorption capacity make them viable alternatives for environmentally friendly and cost-effective treatment of water contaminated with Cr6+ ions.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{PrazeresMazur2024,

title = {Development of novel biopolymer membranes by electrospinning as potential adsorbents for toxic metal ions removal from aqueous solution},

author = {Luciana Prazeres Mazur and Rafaela Reis Ferreira and Rennan Felix da Silva Barbosa and Pedro Henrique Santos and Talles Barcelos da Costa and Melissa Gurgel Adeodato Vieira and Adriano da Silva and Derval S. Rosa and Lucia Helena Innocentini Mei},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0167732223025898},

doi = {10.1016/j.molliq.2023.123782},

issn = {0167-7322},

year  = {2024},

date = {2024-02-00},

urldate = {2024-02-00},

journal = {Journal of Molecular Liquids},

volume = {395},

publisher = {Elsevier BV},

abstract = {This work aims to develop novel biomembranes based on PLA, PBS, or their blend and composites, with the Cloisite® 20A nanoclay, as adsorptive materials for metal ions removal. To obtain a membrane with good morphology and thinner diameter of the fibers, a series of nonwoven mats were prepared by electrospinning. To improve the adsorption performance of the electrospun membranes, thermal and acid modifications were carried out in the nanoclay before the electrospinning process, and the final electrospun membranes were applied in the removal of Cr(VI), Cu(II), Cd(II), Zn(II), Ni(II), and Mn(II) ions present in a multi-metal solution. The PBS/PLA/C20A (80/10/10) membrane obtained with an injection flow rate of 3 mL/h, needle tip-to-collector distance of 15 cm, and voltage of 20 kV were selected for the synthesis of the adsorptive membranes, which has the best morphology due to the small average diameter of the fiber and bead-free structures. The characterization techniques (TGA, BET, helium pycnometry, RMN, and DMA) results proved that the addition of PLA and nanoclay resulted in the formation of a material more resistant and with high porosity and specific surface area than the neat PBS. It can be seen that the membranes prepared with the nanoclay after thermal modification showed high metal removal efficiency than the mats designed with the raw nanoclay and after acid modification. It was also possible to conclude that PBS and PLA present the capacity to gradually release organic carbon compounds, which can be used directly as electron donors for Cr(VI) reduction.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Silva2024,

title = {Comparative study on microwave-assisted and conventional chitosan production from shrimp shell: Process optimization, characterization, and environmental impacts},

author = {Marcelo Bruno de Oliveira Silva and Sueli Aparecida de Oliveira and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0959652624001732},

doi = {10.1016/j.jclepro.2024.140726},

issn = {0959-6526},

year  = {2024},

date = {2024-02-00},

urldate = {2024-02-00},

journal = {Journal of Cleaner Production},

volume = {440},

publisher = {Elsevier BV},

abstract = {Chitosan, obtained from chitin in crustacean exoskeletons, has attracted interest due to its biocompatibility and versatility of application in several industries. Chemical methods are traditional for chitosan production but present environmental challenges. This study comprehensively assesses the microwave-assisted method as a greener alternative compared to conventional deacetylation. Morphological, thermal, and chemical properties, yield, and environmental impacts are evaluated. Experimental results indicate microwave-assisted deacetylation produces chitosan with excellent properties, with a high degree of deacetylation (close to 90%) and yield (above 50%). The Life Cycle Impact Assessment (LCIA) study highlights fossil resource scarcity, climate change, human non-carcinogenic toxicity, and terrestrial ecotoxicity as some of the most relevant environmental impacts, considering the Brazilian scenario. Notably, the difference in reaction time (240 vs 16 min) indicates the substantial advantage of the non-conventional technique in terms of reaction time, also reducing the energy consumption during deacetylation from 382.1 to 8.9 kJ per gram of chitosan produced by conventional and microwave-assisted methods respectively. However, LCIA shows NaOH use during deacetylation as a notable contributor to environmental effects, highlighting the necessity for minimizing its presence. Despite this, microwave integration leads to diminished environmental impact. This research highlights the environmental benefits of microwave-assisted deacetylation for more sustainable chitosan production.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{DominicCD2024,

title = {Extraction, characterization, and life cycle assessment of nanosilica from millet husk: A sustainable alternative with low environmental impact},

author = {Midhun Dominic C D and Derval S. Rosa and Rennan Felix da Silva Barbosa and O.V. Anagha and K.V. Neenu and P.M. Sabura Begum and Aswathy V. Kumar and Jyotishkumar Parameswaranpillai and Chomsri Siriwong and T.G. Ajithkumar and Ankita Shelke and Andreea Pasc},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0959652624003718},

doi = {10.1016/j.jclepro.2024.140924},

issn = {0959-6526},

year  = {2024},

date = {2024-02-00},

urldate = {2024-02-00},

journal = {Journal of Cleaner Production},

volume = {442},

publisher = {Elsevier BV},

abstract = {Eco-friendly approaches for silica production are highly researched to respond increasing industrial demand for bio-nanofillers. Herein, nanosilica of 10–20 nm with mesoporosity was obtained through a mild oxalic acid pre-treatment of millet husk, followed by calcination at 700 °C for 2 h. Compared with commercial precipitated silica (CS) and millet husk ash (MHA) directly obtained by calcination of the husk, the pre-treated silica (MHS) had higher purity, revealed using EDX spectroscopy. Moreover, FTIR and 29Si NMR showed a higher condensation degree in MHS with 73% of Q4 siloxane bonds vs 4% in MHA. The release of the metal and organic impurities from the husk also allows to reduce the crystallinity of MHS, and to increase the specific surface area from 82 m2/g in MHA to 238 m2/g in MHS. The type II N2 adsorption-desorption isotherms of MHA and MHS indicate aggregates of non-porous silica particles. MHS also demonstrated remarkable thermal resilience. According to the LCA analysis, MHS has a 40% lower impact on global warming, a 38% lower impact on human carcinogenic toxicity, and a 38% lower impact on terrestrial acidification compared to rice husk nanosilica. This research thus addresses sustainability challenges by repurposing millet husks, which are readily available due to continuous millet cultivation, particularly in India. By reducing the ecological impact of husk disposal through burning, this study offers an economically viable technology for high-purity silica production, aligning with global efforts to combat climate change and promote sustainable practices.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Schmitz2023,

title = {Toughening of poly(lactic acid) (PLA) with poly(butylene adipate-co-terephthalate) (PBAT): a morphological, thermal, mechanical, and degradation evaluation in a simulated marine environment},

author = {Luíza Schmitz and Júlio Harada and Willian B. Ribeiro and Derval S. Rosa and Rosmary N. Brandalise},

url = {https://link.springer.com/article/10.1007/s00396-023-05157-3},

doi = {10.1007/s00396-023-05157-3},

issn = {1435-1536},

year  = {2023},

date = {2023-12-00},

urldate = {2023-12-00},

journal = {Colloid Polym Sci},

volume = {301},

number = {12},

pages = {1405--1419},

publisher = {Springer Science and Business Media LLC},

abstract = {In this study, blends at different concentrations of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) were developed using poly(styrene-co-maleic anhydride) (AG) as a compatibilizer to improve the toughness without losing biodegradability. The blends were prepared by an extrusion process followed by injection to evaluate their morphological, thermal, and mechanical properties. Degradation in a simulated marine environment was evaluated by residual mass, morphology, and tensile strength after different exposure times. The polymer blend of these polymers showed immiscibility, and the compatibilizer promoted the interaction between the phases. The results showed an increase in impact strength from 27 to 109 J m−1 with the addition of 80 wt% of PBAT, with a significant difference in impact strength, additionally a decrease in elastic modulus from 1063 (pure PLA) to 95 MPa (PLA/PBAT/AG 20/80), accompanied by an increase in elongation at break from 2.2 to 35%, proving an increase in toughness of PLA when adding PBAT. As for the biodegradation test, the morphological results of the loss of integrity on the surface of all the compositions after 30 days in a simulated marine environment are striking, especially for the composition with 80 wt% PBAT, accompanied by a yellowing of the samples and the development of a biofilm on their surfaces. The decrease in elongation at break upon exposure showed an increase in brittleness, a characteristic behavior of the biodegradation of the samples. The highest amount of PBAT in the blends favored the degradation of PLA in a simulated marine environment during the time studied.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilvaNeto2023,

title = {Enhancement of sustainable fused deposition modeling <scp>3D‐printing</scp> with agave Americana fiber‐reinforced poly(lactic) acid biofilaments},

author = {Thalita da Silva Neto and João Vitor Gomes de Freitas and Rennan F. S. Barbosa and Simone F. Medeiros and Derval S. Rosa and Daniella R. Mulinari},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/app.54622},

doi = {10.1002/app.54622},

issn = {1097-4628},

year  = {2023},

date = {2023-11-20},

urldate = {2023-11-20},

journal = {J of Applied Polymer Sci},

volume = {140},

number = {44},

publisher = {Wiley},

abstract = {Additive manufacturing (AM) of eco-friendly biocomposites has been growing recently to obtain green fillers capable of reducing bioplastic costs without compromising the material processability and performance. This paper aims to study the effect of using different Agave America fiber volume ratios on the morphological, chemical, and thermal properties, contact angle, and hardness of poly(lactic) acid (PLA) filament for 3D printing. Sustainable biofilaments of PLA filled with 10 and 5 wt% of Agave Americana fiber were prepared in a thermokinetic mixer and extruded in a machine, and then used to print testing samples using fused deposition modeling (FDM) 3D printer. Biofilaments were characterized using scanning electron microscopy (SEM), thermogravimetry (TGA), differential scanning calorimetry (DSC), and Fourier-transform infrared spectroscopy (FTIR) techniques. The addition of fiber did not significantly influence the biofilament's diameter and density compared to pure PLA. On the other hand, it influenced printed biofilaments' thermal stability and morphological characteristics. The biocomposites developed have shown enhancement in their shore hardness. Thus, the use of Agave Americana fiber reinforced in a PLA matrix did not compromise its thermal properties, nor its processability and printability, which could open the possibility of future research with a biocomposite with higher fiber content and an environmentally friendly alternative over traditional filler materials.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Zanini2023,

title = {Two different routes to prepare porous biodegradable composite membranes containing nanoclay},

author = {Noelle C. Zanini and Rafaela R. Ferreira and Rennan F. S. Barbosa and Alana G. de Souza and Paulo H. Camani and Sueli A. Oliveira and Daniella R. Mulinari and Derval S. Rosa},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/app.54630},

doi = {10.1002/app.54630},

issn = {1097-4628},

year  = {2023},

date = {2023-11-20},

urldate = {2023-11-20},

journal = {J of Applied Polymer Sci},

volume = {140},

number = {44},

publisher = {Wiley},

abstract = {The method employed for membrane preparation and nanoparticle incorporation in membrane systems can affect their properties. This work aims to compare the better strategy to obtain membranes from the preparation of PBAT [Poly(butylene adipate co‐terephthalate)] containing nanoclay Cloisite® 20A (C20A) (0, 0.5, and 1 wt.%) by combined Evaporation/Non‐solvent Induced Phase Separation (EIPS/NIPS) or dip coating methods. The SEM, TGA, contact angle measurements, FTIR, XRD, mechanical testing, and cost analysis characterized EIPS/NIPS to dip coating membranes. EIPS/NIPS membranes had smaller pores (0.3–0.5 μm), with a more homogeneous pore diameter distribution due to C20A nanoclay insertion. PBAT/0.5% C20A<jats:sub>EIPS/NIPS</jats:sub> was the more hydrophilic membrane (37°) with better mechanical properties proven by statistical analysis. The cost analysis showed that EIPS/NIPS membranes production cost per square meter (m<jats:sup>2</jats:sup>) was lower (US$ 73.4–73.8) than dip coating (US$ 89.0–99.2). The EIPS/NIPS method was the most economically and statistically advantageous, and its properties can favor future applications for PTEs removal in aqueous media.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ferreira2023c,

title = {Nanocellulose-based porous materials: Regulation and pathway to commercialization in regenerative medicine},

author = {Filipe V. Ferreira and Alana G. Souza and Rubina Ajdary and Lucas P. de Souza and João H. Lopes and Daniel S. Correa and Gilberto Siqueira and Hernane S. Barud and Derval S. Rosa and Luiz H.C. Mattoso and Orlando J. Rojas},

url = {https://www.sciencedirect.com/science/article/pii/S2452199X23002037},

doi = {10.1016/j.bioactmat.2023.06.020},

issn = {2452-199X},

year  = {2023},

date = {2023-11-00},

urldate = {2023-11-00},

journal = {Bioactive Materials},

volume = {29},

pages = {151--176},

publisher = {Elsevier BV},

abstract = {We review the recent progress that have led to the development of porous materials based on cellulose nanostructures found in plants and other resources. In light of the properties that emerge from the chemistry, shape and structural control, we discuss some of the most promising uses of a plant-based material, nanocellulose, in regenerative medicine. Following a brief discussion about the fundamental aspects of self-assembly of nanocellulose precursors, we review the key strategies needed for material synthesis and to adjust the architecture of the materials (using three-dimensional printing, freeze-casted porous materials, and electrospinning) according to their uses in tissue engineering, artificial organs, controlled drug delivery and wound healing systems, among others. For this purpose, we map the structure–property–function relationships of nanocellulose-based porous materials and examine the course of actions that are required to translate innovation from the laboratory to industry. Such efforts require attention to regulatory aspects and market pull. Finally, the key challenges and opportunities in this nascent field are critically reviewed.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2023d,

title = {Bacterial cellulose‐modified castor oil‐based polyurethane sponge for hexavalent chromium removal},

author = {Lana S. Maia and Fernanda R. Pinhati and Francisco M. Monteceli and Vitória M. M. Colturato and Rennan F. S. Barbosa and Hernane S. Barud and Monique T. da Conceição and Derval S. Rosa and Daniella R. Mulinari},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/app.54443},

doi = {10.1002/app.54443},

issn = {1097-4628},

year  = {2023},

date = {2023-10-10},

urldate = {2023-10-10},

journal = {J of Applied Polymer Sci},

volume = {140},

number = {38},

publisher = {Wiley},

abstract = {Due to the multiple industrial applications of chromium compounds and their dangerous nature for the environment, the development of adsorbent materials has been investigated. In line with this reality, bacterial cellulose (BC) has become a potential filler in the polymeric matrix due to its ability to remove toxic metals; however, its performance is little explored. This research proposes a new approach for BC as a filler in castor oil-based polyurethane, obtaining a sponge for Cr(VI) removal. The pure PU and PU + X%BC sponges (X stands for BC content between 5 and 20 wt%) were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, optical microscopy, density, contact angle (CA), and thermogravimetric analysis. Sorption capacity and efficiency were evaluated as a function of the fiber content, with tests performed in function of contact time (2.5 min to 3 h) at 50 mg L−1. The BC fillers of the sponges increased the density and influenced the morphological, chemical structural, thermal, and sorption properties. Thus, the sponge (PU + 20%BC) presented the highest CA (104.4°) and the best sorption capacity and efficiency (4.3 mg g−1 and 43.2%). The sorption mechanism was well-defined by isotherm models, presenting a maximum adsorption capacity of 23.5 mg g−1 and best fit (R2 = 0.989) with the Freundlich isotherm. The sponge is an efficient material for Cr (VI) removal and provided a promising insight into an adsorption mechanism study.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Souza2023b,

title = {Comprehensive mapping of SARS-CoV-2 inhibition using essential or vegetable oils},

author = {Alana G. Souza and Eliana Della Coletta Yudice and Ivana Barros de Campos and Rafaela R. Ferreira and Greiciele S. Ferreira and Rute Dal Col and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0167732223013430},

doi = {10.1016/j.molliq.2023.122539},

issn = {0167-7322},

year  = {2023},

date = {2023-10-00},

urldate = {2023-10-00},

journal = {Journal of Molecular Liquids},

volume = {387},

publisher = {Elsevier BV},

abstract = {Introduction

The new SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) has spread exponentially since the first recognition of the new virus and continues to infect millions of individuals worldwide. The importance of contaminated surfaces in transmission is uncertain. Minimizing surface contact, hand hygiene after surface contact, and cleaning and disinfecting the environment are recommended to reduce the risk of acquiring SARS-CoV-2. As surfaces are prone to transmitting COVID-19 infection, highly exposed surface areas need to be cleaned frequently with a suitable disinfectant. Essential oils have been extensively used as antimicrobial extract for several microorganisms. However, no experimental studies have previously investigated these compounds against the SARS-CoV-2.



Objectives

In this work, we conducted a comprehensive mapping of SARS-CoV-2 protein denaturation using different essential oils (EO) aiming at the future development of natural disinfectants.



Methods

The tested oils were melaleuca, cinnamon, cardamom, buriti, and linalool. Positive nasopharyngeal samples of COVID-19 patients were exposed in direct contact with EOs, at different times, and the virus elimination efficiency was verified through an immunochromatographic Rapid Antigen Test.



Results

The best EOs were Melaleuca alternifolia and Cinnamomum cassia, which denatured SARS-CoV-2 proteins at least with 5 min of contact by interfering with the viral envelope or the spike protein. Cardamom oil probably damaged the virus capsid, and buriti oil disrupted the viral protein envelop. Linalool oil did not denature SARS-CoV-2 proteins.



Conclusions

Oils have a considerable potential to produce ecologically friendly disinfectants that can inactivate SARS-CoV-2 in different contact times depending on the mechanism of action and oil-active compounds.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023g,

title = {Multifunctional cotton fabrics with novel antibacterial coatings based on chitosan nanocapsules and polyacrylate},

author = {Daniel J. da Silva and Rafaela R. Ferreira and Greiciele da S. Ferreira and Rennan F. S. Barbosa and Jéssica S. Marciano and Paulo H. Camani and Alana G. Souza and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s11998-023-00761-y},

doi = {10.1007/s11998-023-00761-y},

issn = {1935-3804},

year  = {2023},

date = {2023-09-00},

urldate = {2023-09-00},

journal = {J Coat Technol Res},

volume = {20},

number = {5},

pages = {1541--1555},

publisher = {Springer Science and Business Media LLC},

abstract = {Chitosan is a cationic polysaccharide with intrinsic antimicrobial properties that can be used as an ecological alternative to develop functional materials to inhibit the proliferation of microorganisms. This work evaluates chitosan nanocapsules (CNs) as a self-disinfecting agent to provide bactericidal activity on cotton fabrics (CF), using polyacrylate to bind the CNs on the CF surface. The fabrics were characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), contact angle (CA), moisture retention, and antimicrobial tests against Escherichia coli and Bacillus subtilis. The FTIR results showed new peaks related to chitosan structure, indicating the adequate fixation of the CNs on the cotton fibers. SEM images corroborated the polyacrylate binder's efficient adhesion, connecting the CNs and the cotton fiber surface. The CF surface properties were considerably modified, while CN/polyacrylate coating promoted antibacterial activity against the B. subtilis (gram-positive bacteria) for the developed wipe, but they do not display bactericidal effects against E. coli (gram-negative bacteria).},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{DominicCD2023,

title = {Nanosilica from Averrhoa bilimbi juice pre-treated rice husk: Preparation and characterization},

author = {Midhun Dominic C D and Neenu K V and P.M. Sabura Begum and Rani Joseph and Derval S. Rosa and Yongxin Duan and Aiswarya Balan and T.G. Ajithkumar and Mary Soumya and Ankita Shelke and Jyotishkumar Parameswaranpillai and Michael Badawi},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0959652623016347},

doi = {10.1016/j.jclepro.2023.137476},

issn = {0959-6526},

year  = {2023},

date = {2023-08-00},

urldate = {2023-08-00},

journal = {Journal of Cleaner Production},

volume = {413},

publisher = {Elsevier BV},

abstract = {The preparation of nanosilica from rice husk without using any concentrated mineral acids is a novel concept. This work proposes a bioleaching strategy to remove metallic impurities from rice husk for the preparation of nanosilica. Herein, nanosilica (BJRHS) was prepared by calcinating Averrhoa bilimbi juice pre-treated rice husks in a muffle furnace. The chemical and atomic structures of commercial precipitated silica (CS), rice husk ash (RHA), and BJRHS were analyzed using different analytical techniques. The optimal leaching time, calcination temperature, and calcination time were 1 h, 500 °C, and 6 h respectively. The particle size of BJRHS was found to be 6–12 nm, which is less than that of RHA and CS. The BET surface area of BJRHS (204 m2/g) was found to be greater than RHA (110.5 m2/g) and CS (172.1 m2/g). Mesoporous nanosilica with excellent surface area and purity was produced sustainably from rice husk which could be recommended to use in the field of catalysis, polymer technology, etc.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2023c,

title = {Revalorization of Macadamia nutshell residue as a filler in eco-friendly castor polyol-based polyurethane foam},

author = {Lana S. Maia and Lorena C. S. Balieiro and Ericson J. O. Teixeira and Luciano M. Rodrigues and Derval S. Rosa and Daniella R. Mulinari},

url = {https://link.springer.com/article/10.1007/s10163-023-01693-w},

doi = {10.1007/s10163-023-01693-w},

issn = {1611-8227},

year  = {2023},

date = {2023-07-00},

urldate = {2023-07-00},

journal = {J Mater Cycles Waste Manag},

volume = {25},

number = {4},

pages = {2295--2311},

publisher = {Springer Science and Business Media LLC},

abstract = {The use of lignocellulosic fibers as fillers in polymer matrices has aroused the interest of the scientific community and industrial sectors. In Brazil, the high macadamia consumption has generated a significant amount of residues that are incorrectly discharged. Thus, the revalorization of macadamia residues (MR) as filler in castor oil-based polyurethane (PU) foams with different particle sizes (28 and 35 mesh) and filler contents (5–20%wt) was evaluated. The MR, neat PU, and their biocomposites were characterized by Spectroscopy Fourier-transform infrared spectroscopy (FTIR), Optical microscopy (OM), Scanning electron microscopy (SEM), apparent density, contact angle, water adsorption experiments, X-Ray diffraction analysis (XRD), Thermogravimetry (TGA), and mechanical tests. The insertion of MR in the PU matrix provided a nucleating effect producing greater density foams and smaller pore sizes compared to neat PU. Specimens of higher MR contents were highlighted. These biocomposites presented a good hydrophobic character, a low water permeation, and a strong interaction between MR/PU, resulting in biocomposites of good thermal stability and compressive strength. Regarding the statistical study, it was observed that the different MR sizes induced the formation of small pores statistically distinct. Besides, the largest particle (28 mesh) provided better mechanical performance. Therefore, MR as filler in PU foams is a sustainable alternative for the development of materials with several applications.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daS.Ferreira2023,

title = {Eco-friendly and effective antimicrobial Melaleuca alternifolia essential oil Pickering emulsions stabilized with cellulose nanofibrils against bacteria and SARS-CoV-2},

author = {Greiciele da S. Ferreira and Daniel J. da Silva and Alana G. Souza and Eliana D.C. Yudice and Ivana B. de Campos and Rute Dal Col and Andre Mourão and Herculano S. Martinho and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0141813023021220},

doi = {10.1016/j.ijbiomac.2023.125228},

issn = {0141-8130},

year  = {2023},

date = {2023-07-00},

urldate = {2023-07-00},

journal = {International Journal of Biological Macromolecules},

volume = {243},

publisher = {Elsevier BV},

abstract = {Melaleuca alternifolia essential oil (MaEO) is a green antimicrobial agent suitable for confection eco-friendly disinfectants to substitute conventional chemical disinfectants commonly formulated with toxic substances that cause dangerous environmental impacts. In this contribution, MaEO-in-water Pickering emulsions were successfully stabilized with cellulose nanofibrils (CNFs) by a simple mixing procedure. MaEO and the emulsions presented antimicrobial activities against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Moreover, MaEO deactivated the SARS-CoV-2 virions immediately. FT-Raman and FTIR spectroscopies indicate that the CNF stabilizes the MaEO droplets in water by the dipole-induced-dipole interactions and hydrogen bonds. The factorial design of experiments (DoE) indicates that CNF content and mixing time have significant effects on preventing the MaEO droplets' coalescence during 30-day shelf life. The bacteria inhibition zone assays show that the most stable emulsions showed antimicrobial activity comparable to commercial disinfectant agents such as hypochlorite. The MaEO/water stabilized-CNF emulsion is a promissory natural disinfectant with antibacterial activity against these bacteria strains, including the capability to damage the spike proteins at the SARS-CoV-2 particle surface after 15 min of direct contact when the MaEO concentration is 30 % v/v.



},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Souza2023,

title = {A Comprehensive Investigation on Ho Wood Essential Oil Solution or Gel Using Pickering Systems},

author = {Alana G. Souza and Rafaela R. Ferreira and Jéssica S. Marciano and Eder R. Oliveira and Maurício M. Kato and Eliana D. C. Yudice and Luiz F. Setz and Vijaya K. Rangari and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s10924-022-02750-5},

doi = {10.1007/s10924-022-02750-5},

issn = {1572-8919},

year  = {2023},

date = {2023-06-00},

urldate = {2023-06-00},

journal = {J Polym Environ},

volume = {31},

number = {6},

pages = {2624--2640},

publisher = {Springer Science and Business Media LLC},

abstract = {Essential oils have received increasing attention due to their known biological activities and health benefits. The emulsions should be more liquid or viscous (gels) based on the desired application. This work aimed to prepare ho wood (linalool) essential oil solutions or gels using the Pickering emulsion approach, providing a comprehensive overview of the nanocellulose morphology influence on the final property of the linalool material, from its morphology to its chemical interactions with the oil that could influence the formation of the gel or solution. The solutions were prepared using cellulose nanocrystals (CNC), while the gels were prepared with cellulose nanofibers (CNF). The Sol-CNC showed oval droplets of ~30 μm surrounded by nanocrystals anchored onto the oil surface via chemical interactions. The Gel-CNF showed droplets of ~40 μm encapsulated by the nanofibers and forming a three-dimensional network with a shear-thinning flow behavior, analyzed by Ostwald-de-Waele model. Both systems showed good stability over time and towards shear. The Sol-CNC stability is associated with new hydrogen bonds that maintain the structures together and avoid their instability, while the Gel-CNF did not alter the compound's chemical structures, indicating a steric mechanism. While the Sol-CNC samples only inhibited the Staphylococcus aureus bacteria, the Gel-CNF inhibited Escherichia coli, S. aureus, and Salmonella. The stabilization and chemical interactions influenced the oil’s active component volatility, altering its antimicrobial action. The Sol or Gel samples are antimicrobial systems with unique properties that can be applied in a broad spectrum of products, such as hygienic, food, and disinfection.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023e,

title = {Super effective antimicrobial silver-sputtered coatings on poly(lactic acid) against bacteria and omicron SARS-CoV-2},

author = {D.J. da Silva and G.S. Ferreira and A. Duran and F.L.A. Fonseca and R.F. Bueno and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/pii/S2468519423001088},

doi = {10.1016/j.mtchem.2023.101481},

issn = {2468-5194},

year  = {2023},

date = {2023-06-00},

urldate = {2023-06-00},

journal = {Materials Today Chemistry},

volume = {30},

publisher = {Elsevier BV},

abstract = {Poly(lactic acid) (PLA) is a biopolymer with properties potentially suitable for fabricating packaging, medical devices, and healthcare products in a more friendly environmental way because this polymer presents biodegradability, compostability, low carbon footprint, and recyclability. However, PLA does not present intrinsic antimicrobial properties. Antimicrobial materials are highly desirable for manufacturing smart packaging and personal protective equipment to secure food and health professionals against pathogenic microorganisms. In this work, we evaluated the antimicrobial performance of (Ag)-coated PLA against Escherichia coli, Bacillus subtilis, and Omicron severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). PLA was rapidly coated with metallic Ag by pulsed direct current magnetron sputtering (pDCMS) for 5, 10, and 20 s. Atomic force microscopy indicates that the Ag coating grows predominantly on the PLA surface via a bulk diffusion mechanism. According to bactericidal and quantitative reverse transcription polymerase chain reaction assays, Ag-coated PLA was capable of inhibiting bacterial biofilm formation and disrupting the genetic material of the Omicron SARS-CoV-2. X-ray high-resolution photoelectron and nuclear magnetic resonance results suggest no polymer chain scission in the PLA bulk due to plasma thermal stress effects during Ag sputtering.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023f,

title = {Omicron SARS-CoV-2 antiviral on poly(lactic acid) with nanostructured copper coating: Wear effects},

author = {Daniel J. da Silva and Adriana Duran and Fernando L.A. Fonseca and Duclerc F. Parra and Rodrigo F. Bueno and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/pii/S016943322300692X},

doi = {10.1016/j.apsusc.2023.157015},

issn = {0169-4332},

year  = {2023},

date = {2023-06-00},

urldate = {2023-06-00},

journal = {Applied Surface Science},

volume = {623},

publisher = {Elsevier BV},

abstract = {Surface modification corresponds to a set of viable technological approaches to introduce antimicrobial properties in materials that do not have such characteristics. Antimicrobial materials are important to prevent the proliferation of microorganisms and minimize the transmission of diseases caused by pathogens. Herein, poly(lactic acid) (PLA) was decorated with nanocones through copper sputtering followed by a plasma etching. Antiviral assays by Quantitative Reverse Transcription-Polymerase Chain Reaction (RT-qPCR) show that nanostructured Cu-coated PLA has high antiviral activity against Omicron SARS-CoV-2, showing a relative reduction in the amplified RNA (78.8 ± 3.9 %). Atomic Force Microscopy (AFM), X-ray Photoelectron Spectroscopy (XPS), and wear-resistance tests show that 20 wear cycles disrupt the surface nanocone patterns and significantly reduce the Cu content at the surface of the nanostructured Cu-coated PLA, leading to total loss of the antiviral properties of nanostructured PLA against Omicron SARS-CoV-2.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2022b,

title = {PU Foams Resistance Against Natural Weathering Aging: The Effect of Coffee Husk Residues in Different Contents},

author = {Lana S. Maia and Noelle C. Zanini and Paulo H. Camani and Simone F. Medeiros and Derval S. Rosa and Daniella R. Mulinari},

url = {https://link.springer.com/article/10.1007/s10924-022-02720-x},

doi = {10.1007/s10924-022-02720-x},

issn = {1572-8919},

year  = {2023},

date = {2023-05-00},

urldate = {2023-05-00},

journal = {J Polym Environ},

volume = {31},

number = {5},

pages = {2073--2092},

publisher = {Springer Science and Business Media LLC},

abstract = {Due to high consumption and high demand for polyurethane (PU) foams, they are usually exposed to the environment, suffering the influence and action of weathering. Then, this work investigates the coffee husk residues (CHR) introduction to PU foams obtained from castor oil. A comparative study on the effect of weathering on neat PU foams and CHR-contained PU foams was carried out. After 6 months of aging, an increase in weight for all samples was observed in the first days due to moisture absorption, with a subsequent decline in the weight of the samples until completing 6 months of testing. Comparing neat PU and PU composite foams, high CHR content promoted higher weight loss. Weathering aging changed other properties, such as the decrease in the apparent density of the foams, which was generated by degrading processes of oxidation and photodegradation. Besides, hydrolytic processes arise from UV radiation, temperature variation, and humidity present in the environment to which samples were exposed. Due to this degradation, high crystallinity, mechanical properties, hydrophilicity, and thermal stability were verified. However, the degradative effect of weathering was mitigated due to the addition of coffee husk residues (especially between 5 and 20% CHR). It showed that the coffee husk in the matrix of PU foams resulted in a protective effect on the degradative process, avoiding severe property losses or structural alteration in the PU foams. These characteristics may promote an application of the PU composite foam for civil construction areas, as protective material against weathering.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023d,

title = {Bioinspired Antimicrobial PLA with Nanocones on the Surface for Rapid Deactivation of Omicron SARS-CoV-2},

author = {Daniel J. da Silva and Adriana Duran and Aline D. Cabral and Fernando L. A. Fonseca and Shu Hui Wang and Duclerc F. Parra and Rodrigo F. Bueno and Inés Pereyra and Derval S. Rosa},

url = {https://pubs.acs.org/doi/abs/10.1021/acsbiomaterials.2c01529},

doi = {10.1021/acsbiomaterials.2c01529},

issn = {2373-9878},

year  = {2023},

date = {2023-04-10},

urldate = {2023-04-10},

journal = {ACS Biomater. Sci. Eng.},

volume = {9},

number = {4},

pages = {1891--1899},

publisher = {American Chemical Society (ACS)},

abstract = {Bioinspired bactericidal surfaces are artificial surfaces that mimic the nanotopography of insect wings and are capable of inhibiting microbial growth by a physicomechanical mechanism. The scientific community has considered them an alternative method to design polymers with surfaces that inhibit bacterial biofilm formation, suitable for self-disinfectant medical devices. In this contribution, poly(lactic acid) (PLA) with nanocone patterns was successfully produced by a novel two-step procedure involving copper plasma deposition followed by argon plasma etching. According to reverse transcription-quantitative polymerase chain reaction tests, the bioinspired PLA nanostructures display antiviral performance to inactivate infectious Omicron severe acute respiratory syndrome coronavirus 2 particles, reducing the amount of the viral genome to less than 4% in just 15 min due to a possible combined effect of mechanical and oxidative stress. The bioinspired antiviral PLA can be suitable for designing personal protection equipment to prevent the transmission of contagious viral diseases, such as Coronavirus Disease 2019.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2023b,

title = {Tuning of renewable sponge‐like polyurethane physical‐chemical and morphological properties using the pullulan as a reactive filler},

author = {Lana S. Maia and Anne Shayene C. de Bomfim and Daniel M. de Oliveira and Fernanda R. Pinhati and Monique O. T. da Conceição and Hernane S. Barud and Simone A. Medeiros and Derval S. Rosa and Daniella R. Mulinari},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/app.53619},

doi = {10.1002/app.53619},

issn = {1097-4628},

year  = {2023},

date = {2023-03-15},

urldate = {2023-03-15},

journal = {J of Applied Polymer Sci},

volume = {140},

number = {11},

publisher = {Wiley},

abstract = {This study aimed to evaluate the effect of pullulan (Pull) on a renewable polyurethane sponge‐like scaffold synthesized from the Pull mixture with the castor oil‐based polyol and the prepolymer using the situ foaming method. The Pull contents on the sponge‐like are 5, 10, and 20 wt.%. The samples were evaluated by optical microscopy (OM), scanning electron microscopy (SEM), density, Fourier transform infrared spectroscopy (FTIR), contact angle, Thermogravimetry, X‐ray diffraction analysis (XRD), and compression strength test, respectively. FTIR results indicated that Pull was hydrogen‐bonded to PU foam chains and increased the sponge‐like scaffolds density, inducing a decrease in average cell size compared to the pristine PU, confirming that they act as nucleating agents. The Pull addition improved PU foams' hydrophobicity and mechanical properties and caused a thermal stability median between Pull and pristine PU. Thus, all renewable sponge‐like scaffolds were hydrophobics and presented appropriate mechanical behavior, exhibiting better physicochemical properties, and appearing as promising candidates for biomedical applications.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ferreira2023b,

title = {The synergistic effect of nanocellulose and nanocapsules into poly(butylene adipate-co-butylene terephthalate) films for active packaging},

author = {Rafaela R. Ferreira and Alana G. Souza and Rennan F.S. Barbosa and Jéssica S. Marciano and Fernanda A.S. Marques and Sushanta K. Mitra and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S2214289422001880},

doi = {10.1016/j.fpsl.2022.100996},

issn = {2214-2894},

year  = {2023},

date = {2023-03-00},

urldate = {2023-03-00},

journal = {Food Packaging and Shelf Life},

volume = {35},

publisher = {Elsevier BV},

abstract = {The pandemic scenario has impacted the consumption pattern, increasing the use of single-use materials. This work presents the development of active films for application in food packaging products. Poly(butylene adipate-co-butylene terephthalate) (PBAT) films, reinforced with nanocellulose (2 % by weight) and chitosan nanocapsules containing essential oils (EO), were developed using two different EO and different capsules content (1 %, 3 %, and 5 % by weight). The films were investigated by thermal analysis (TGA), mechanical properties, X-Ray diffraction (XRD), water vapor permeability (WVP), contact angle, oil release, and antimicrobial tests. The films presented excellent thermal stability and showed increased mechanical properties compared with pristine films. The film's crystallinity corroborated these results, indicating that the fibers and capsules promoted a nucleating effect during film formation. The WVP and contact angle results indicated that EO's hydrophobicity impacted the film's surface properties. The antimicrobial activity of the films was evaluated against Escherichia coli (E. coli), and it was observed inhibition of bacterial growth for all films containing EO. These results show a promising application for extending food products' shelf life in new formulations and using environmentally friendly materials.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023b,

title = {Copper coatings on poly(lactic acid) via rapid magnetron sputtering: Morphology, chemistry, and antimicrobial performance against bacteria and SARS-CoV-2},

author = {Daniel J. da Silva and Greiciele S. Ferreira and Adriana Duran and Fernando L.A. Fonseca and Duclerc F. Parra and Rodrigo F. Bueno and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S2352492823001307},

doi = {10.1016/j.mtcomm.2023.105440},

issn = {2352-4928},

year  = {2023},

date = {2023-03-00},

urldate = {2023-03-00},

journal = {Materials Today Communications},

volume = {34},

publisher = {Elsevier BV},

abstract = {Materials with antimicrobial properties are highly desirable for making food packaging and personal protective equipment due to their intrinsic ability to prevent the proliferation of pathogenic microorganisms and food contamination. Poly(lactic acid) (PLA) is a biodegradable, compostable, and recyclable polymer that presents interesting mechanical properties for such applications. However, this polymer does not show intrinsic antimicrobial activity. Herein, we applied Radio Frequency Magnetron Sputtering (RF-MS) to produce antimicrobial copper coatings on the PLA surface. The results indicate that the prolongation in the copper deposition time causes an increase in surface roughness. The PLA coating with copper using a short deposition time (5–20 s) was sufficient to guarantee a bactericidal effect against Escherichia coli and Bacillus subtilis, in addition to conferring antiviral activity against Omicron Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Nuclear magnetic resonance (NMR) and high-resolution x-ray photoelectron (XPS) spectroscopic studies indicate that occurs only localized degradation on the PLA surface via polymer chain scission. The RF-MS technique was suitable for rapidly manufacturing antimicrobial Cu-coated PLA and providing low copper consumption in the antimicrobial coating process.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2023c,

title = {Bactericidal Properties of Natural Fibers Hybrid Functionalized with ZnO/Cu2+ and ZnO/Cu0},

author = {Daniel J. da Silva and Alana G. Souza and Paulo H. Camani and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s12221-023-00030-0},

doi = {10.1007/s12221-023-00030-0},

issn = {1875-0052},

year  = {2023},

date = {2023-03-00},

urldate = {2023-03-00},

journal = {Fibers Polym},

volume = {24},

number = {3},

pages = {959--973},

publisher = {Springer Science and Business Media LLC},

abstract = {Multifunctional natural fibers with antimicrobial properties have been applied as a viable strategy to prevent microorganism contamination and proliferation on the surface of clothes and personal protection equipment marketed and used by health professionals, patients, and the general population. They present intrinsic antimicrobial capacity, providing effective protection preventing the transmission and contagion of diseases caused by pathogenic microorganisms. Herein, we successfully functionalized cotton fibers with ZnO/Cu2+ and ZnO/Cu0 hybrid systems via a hydrothermal routine. Rietveld refinement from X-ray Diffractometry (XRD) data and Fourier-Transform Raman Spectroscopy (FT-Raman) indicate alterations on the cellulose crystallinity index in the cotton fibers after functionalization, mainly on the proportion of cellulose Iβ polymorph crystal. Scanning Electron Microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) indicate adequate ZnO nanoparticles fixation and in-situ reduction of copper ions. Antimicrobial tests confirm that the multifunctional fibers present bactericidal activity against Gram-negative and Gram-positive bacteria under electromagnetic irradiation (440–480 nm). Self-disinfection capability and UV blocking properties of wipes with fibers after ZnO/Cu2+ and ZnO/Cu0 functionalization were improved.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Galvão2023,

title = {Analysis of selective fluorescence for the characterization of microplastic fibers: Use of a Nile Red-based analytical method to compare between natural and synthetic fibers},

author = {Luciana S. Galvão and Rafaela R. Ferreira and Emília M.S. Fernandes and Carla Almêda Correia and Ticiane S. Valera and Derval S. Rosa and Hélio Wiebeck},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0304389422020118},

doi = {10.1016/j.jhazmat.2022.130217},

issn = {0304-3894},

year  = {2023},

date = {2023-02-00},

urldate = {2023-02-00},

journal = {Journal of Hazardous Materials},

volume = {443},

publisher = {Elsevier BV},

abstract = {The scientific community has been focusing on studying and understanding the extent of damage caused by microplastics (MPs) to flora, fauna, and humans, including the environmental and health risks associated with them. MPs with different morphologies have been described in different environments, with fibers being the most common type regardless of the environment. Various methods have been used to analyze MPs. Analytical methodologies such as visual inspection, spectroscopic methods, and others currently used to study MPs are time-consuming, and only subjective results are obtained when these methods are used for sample analysis. Researchers have used various dyes, such as Nile Red (NR), a selective fluorescent stain, to differentiate the polymers from the other sample components and address these problems. Using such dyes helps distinguish polymer particles from other contaminants present in the samples. We aimed to study the analytical process, morphology, and wettability of synthetic (such as polyethylene and polypropylene) and natural (such as linen and cotton) fibers using NR to characterize the fibers. The fibers were fragmented manually, and the samples were prepared using a cryomicrotome. The prepared samples were subjected to different NR incubation times of 30 min, 24 h, and 168 h, and characterized under ultraviolet light using optical microscopy. We investigated the effect of NR on different fibers, and the samples selection using the fluorescence properties generated when the fibers adsorbed the NR dye. The wettabilities of the samples indicated that polyethylene and polypropylene were hydrophobic, while linen and cotton were hydrophilic. Both synthetic and natural fibers exhibited fluorescence properties in the presence of NR. This increased the complexity of executing the MP characterization process, indicating that combined methodologies and optical and chemical identification processes should be used to characterize plastic specimens efficiently. We summarize and discuss the results and findings and provide recommendations for future laboratory research on microplastic fibers focusing on (I) microplastic selection, (II) stain preparation, and (III) microplastic characterization.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ferreira2023,

title = {Super stable Melaleuca alternifolia essential oil Pickering emulsions stabilized with cellulose nanofibrils: Rheological aspects},

author = {Greiciele da S. Ferreira and Daniel J. da Silva and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0167732222027222},

doi = {10.1016/j.molliq.2022.121183},

issn = {0167-7322},

year  = {2023},

date = {2023-02-00},

urldate = {2023-02-00},

journal = {Journal of Molecular Liquids},

volume = {372},

publisher = {Elsevier BV},

abstract = {Melaleuca alternifolia essential oil (MaEO) has attracted technological interest in the pharmaceutical, cosmetic and food sectors for its outstanding and broad antimicrobial spectra. However, its active components are highly susceptible to oxidation due to weathering. Therefore, stabilization of the MaEO components is essential. In this work, we evaluated the stability and rheology of MaEO-in-water Pickering emulsions using cellulose nanofibrils (CNF) as an eco-friendly and sustainable stabilizing agent. Small amplitude oscillatory shear (SAOS) tests brought exciting information about the relationship between internal microstructure strength and the relaxation processes, retardation processes, and viscous flow behavior of the emulsions. Measurements of oil droplet diameter distribution and steady-state rheological tests indicate that the emulsions have super stability under static environmental conditions within 28 storage days. Also, the emulsions present steady-state viscosity suitable for applications in dysphagic foods, presenting a pronounced shear-thinning behavior appropriate to developing cream and lotion skin-care eco-friendly products for the human body.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Camani2023,

title = {Divalent metal ion removal from simulated water using sustainable starch aerogels: Effect of crosslinking agent concentration and sorption conditions},

author = {Paulo H. Camani and C.D. Midhun Dominic and Duclerc F. Parra and Heloísa F. Maltez and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0141813022028732},

doi = {10.1016/j.ijbiomac.2022.11.308},

issn = {0141-8130},

year  = {2023},

date = {2023-01-00},

urldate = {2023-01-00},

journal = {International Journal of Biological Macromolecules},

volume = {226},

pages = {628--645},

publisher = {Elsevier BV},

abstract = {This paper evaluates corn starch aerogels, studying different crosslinking agent (trisodium citrate) concentrations (1:1, 1:1.5, and 1:2) and sorption conditions (contact time, adsorbent weight, and initial concentration) regarding the potentially toxic elements (PTEs) [Cd(II) or Zn(II)] adsorption of the aqueous systems. Besides, other properties of aerogels, such as structural properties, specific surface area, and mechanical performance, were evaluated. For adsorption results, better values were observed in adsorption capacity and efficiency for the initial concentration of 100 ppm. In addition, an adsorption time of 12 h and an adsorbent weight of 3.0 g obtained better results due to the possible balance in this time and the high specific surface area available for Cd(II) adsorption. As for the type of adsorbent, the Aero 1:1.5 sample (intermediate crosslinking agent concentration) obtained better results, possibly due to the high porosity, smaller pore sizes, high pore density, and high specific surface area (198 m2·g−1). In addition, hydroxyl groups in the starch aerogel removed Cd(II) ions with 30 % adsorption efficiency. Lastly, Aero 1:1.5 obtained a high mechanical strength at compression and a satisfactory compressive modulus. In contrast, starch aerogels did not absorb the Zn(II) ion.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Leonardo2023,

title = {Nanozyme catalytic mimetic effect of iron oxide nanoparticles hybrids with cellulosic matrices and its synergism with microorganisms},

author = {Zanata Leonardo and Derval S. Rosa},

url = {https://www.chemisgroup.us/articles/IJNNN-9-149.php},

doi = {10.17352/2455-3492.000049},

issn = {2455-3492},

year  = {2023},

date = {2023-00-00},

urldate = {2023-00-00},

journal = {Int J Nanomater Nanotechnol Nanomed},

volume = {9},

number = {1},

pages = {001--003},

publisher = {Peertechz Publications Private Limited},

abstract = {Iron Oxide Nanoparticles (IONPs) are generally assumed to be biologically inert, presenting chemical stability and low toxicity, and they can be hybridized with cellulosic matrixes aiming for biological applications (e.g. nanozymes). Two hydrothermal coprecipitation methods were applied, aiming to produce 2 different size Iron oxide nanoclusters, using ferric chloride and ferrous chloride, as well as nitrocellulose and cellulosic residues for the hybrids. The obtained materials were tested for catalytic effect in comparison and in synergy with catalase-positive P. aeruginosa, S. aureus, and B. subtilis bacterial strains. The catalytic effect was observed for all obtained materials and microorganisms, Due to the bivalent and trivalent iron molecules distributed along IONP cubic crystalline inverse spinel structures. Michaelis-Menten constant (Km) of IONP-and hybrids was higher in synergy with S. aureus in comparison with the results obtained by the microorganism alone, for instance, the best enzymatic efficiency for O2 release from hydrogen peroxide among the tested microorganisms. However, no significant difference was observed for most of the obtained materials alone. On the other hand, IONPs may help microorganisms as mimetic catalytic enzymes, when applied in synergy whit them.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2022b,

title = {Delta SARS-CoV-2 inactivation and bactericidal performance of cotton wipes decorated with TiO2/Ag nanoparticles like Brazilian heavy-fruited Myrciaria cauliflora},

author = {Daniel J. da Silva and Adriana Duran and Aline D. Cabral and Fernando L.A. Fonseca and Rodrigo F. Bueno and Shu Hui Wang and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/pii/S2352492822011321},

doi = {10.1016/j.mtcomm.2022.104288},

issn = {2352-4928},

year  = {2022},

date = {2022-12-00},

urldate = {2022-12-00},

journal = {Materials Today Communications},

volume = {33},

publisher = {Elsevier BV},

abstract = {The current pandemic of Coronavirus Disease 2019 (COVID-19) raised several concerns about using conventional textiles for manufacturing personal protective equipment without self-disinfecting properties since the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is transmitted mainly by aerosols that can transpose cotton masks. Therefore, developing new cotton fibers with high self-disinfecting ability is essential to avoid a new pandemic due to new SARS-CoV-2 variants. Herein, we developed cotton wipes (CFs) with fibers coated by Ag, TiO2, and Ag/TiO2 hybrid nanoparticles like Brazilian heavy-fruited Myrciaria cauliflora by a sonochemical approach. Moreover, the coated CFs present high antimicrobial performance against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), being able to inactivate infectious SARS-CoV-2 (Delta variant) by the destruction of the spike, membrane, and nucleocapsid proteins while the viral RNA is not significantly affected, according to the molecular biological findings.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2022c,

title = {Designing antimicrobial polypropylene films with grape pomace extract for food packaging},

author = {Daniel J. da Silva and Matheus M. de Oliveira and Shu Hui Wang and Danilo J. Carastan and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S2214289422001211},

doi = {10.1016/j.fpsl.2022.100929},

issn = {2214-2894},

year  = {2022},

date = {2022-12-00},

urldate = {2022-12-00},

journal = {Food Packaging and Shelf Life},

volume = {34},

publisher = {Elsevier BV},

abstract = {Grape pomace (mixture of skins and seeds) is a residual by-product of the winemaking process, rich in polyphenolic compounds that have antioxidant and antimicrobial properties and can be recycled to manufacture fruit extracts to be used in new technological products. The use of non-toxic substances is exciting for developing packagings that are in direct contact with food, as components present in the polymer might migrate to the food. Moreover, the gradual release of these non-toxic bioactive components confers long-term antimicrobial activity to these PP films enriched with grape pomace extract. In addition, the use of raw materials from natural and renewable origins to manufacture antimicrobial packaging contributes to a more sustainable and eco-friendly industrial production and to mitigate environmental impacts. In this research, bactericidal isotactic polypropylene (PP) was developed using grape pomace extract as an antimicrobial additive and presents low water vapor permeability and antimicrobial activity against Gram-negative (Escherichia coli) and Gram-positive (Bacillus subtilis) bacteria, showing potential to function as an active and safer polymeric food packaging.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Fernandes2022,

title = {Municipal Park Grounds and Microplastics Contamination},

author = {Emília Mori Sarti Fernandes and Alana Gabrieli de Souza and Rennan Felix da Silva Barbosa and Derval S. Rosa},

url = {https://link.springer.com/article/10.1007/s10924-022-02580-5},

doi = {10.1007/s10924-022-02580-5},

issn = {1572-8919},

year  = {2022},

date = {2022-12-00},

urldate = {2022-12-00},

journal = {J Polym Environ},

volume = {30},

number = {12},

pages = {5202--5210},

publisher = {Springer Science and Business Media LLC},

abstract = {The presence of microplastics (MPs) in different terrestrial ecosystems has adverse effects on planet biota and even on humans in the long term. However, few studies evaluate areas with a high circulation of people, such as parks. This work aimed to carry out a comparative study between the municipal landfill and one park in Santo André (SP), Brazil, seeking to prove their presence and establish the types of plastics found in these environments, exploring the correlation between them. For that, different sites at the park were selected, and soil was collected from the surface and 20 cm depth. The samples were characterized by optical microscopy and Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, and MPs abundancy and the results were compared with landfill soil as standard. Results indicated the presence of microplastics in the park soil in different morphologies, such as fragments and fibers, and degradation characteristics. The FTIR indicated the presence of polypropylene, polyethylene terephthalate, and polyethylene, with an abundance of 1401 items kg−1 for the park and 2393 items kg−1 in the landfill, indicating that parks have high amounts of MPs in the soil, like landfills, being a source of contaminants with risk of toxicity. This work established a correlation between regions with a higher flow of people and, consequently, more significant maintenance and cleaning, with a lower frequency of microplastics, and regions with a lower flow of people, such as places with more vegetation, where the incorrect disposal of solid waste results in a higher frequency of microplastics with characteristics of degradation by weathering.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Maia2022,

title = {Coffee husks residues incorporated into polyurethane foam towards greener material for diesel S10 and S500 removal and recovery},

author = {Lana S. Maia and Noelle C. Zanini and Paulo H. Camani and Rennan F.S. Barbosa and Alana G. Souza and Simone F. Medeiros and Derval S. Rosa},

url = {https://www.sciencedirect.com/science/article/abs/pii/S0926669022012304},

doi = {10.1016/j.indcrop.2022.115747},

issn = {0926-6690},

year  = {2022},

date = {2022-12-00},

urldate = {2022-12-00},

journal = {Industrial Crops and Products},

volume = {189},

publisher = {Elsevier BV},

abstract = {Seawater contamination draws concerns due to its effect on the environment and living beings, where oil spillages are highlighted due to their severe impact. Conventional materials to deal with these problems present non-sustainable nature, and thus, new developments are being performed to develop materials that align sorption properties and higher environmental nature. This work prepared PU composite foams with different coffee husk residues (CR) contents for sorption capacity to mitigate oil contamination. Infrared analysis showed that CR promoted harder segments within the PU structure, influencing the composite foam's density. The pore morphology changed from an open-cell to a partial closed-cell structure with a smaller pore size than neat PU, and composites showed a higher contact angle. The samples did not have significant thermal stability and mechanical properties changes compared to neat PU. Besides, all the samples presented strain comparable to neat PU. Sorption tests showed that all the composites presented sorption efficiency exceeding 80 % of removal. PU+ 40 % CR sample stood out as it presents the higher CR content, and the isotherm showed a better fit with the Langmuir model. Additionally, PU+ 40 % CR showed excellent reusability during 14 and 11 cycles of sorption-desorption.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Carvalho2022,

title = {Preparation and characterization of cationic pullulan-based polymers with hydrophilic or amphiphilic characteristics for drug delivery},

author = {Layde T. Carvalho and Ana Julia R.M. Teixeira and Rodolfo M. Moraes and Rennan F.S. Barbosa and Rafaela C. Queiroz and Dayane B. Tada and Daniella R. Mulinari and Derval S. Rosa and Maria Inês Ré and Simone F. Medeiros},

url = {https://www.sciencedirect.com/science/article/abs/pii/S1381514822002863},

doi = {10.1016/j.reactfunctpolym.2022.105441},

issn = {1381-5148},

year  = {2022},

date = {2022-12-00},

urldate = {2022-12-00},

journal = {Reactive and Functional Polymers},

volume = {181},

publisher = {Elsevier BV},

abstract = {Pullulan has attracted considerable attention due to its immunogenicity, biodegradability, biocompatibility, and hydrophilic nature, making it useful in cosmetics and pharmaceutical applications. In addition, pullulan is considered a biopolymer capable of modification via chemical reactions, which is a promising strategy to expand the range of its applications. In this study, cationic pullulan-based polymers with hydrophilic or amphiphilic nature were successfully synthesized by nucleophilic replacement and ring-opening polymerization. Firstly, pullulan was partially modified with 2-Chloro-N,N-diethylethylamine (DEAE) to generate DEAE-modified pullulan (PULL-DEAE), a polymer with cationic and hydrophilic nature. Secondly, the remaining hydroxyl groups of PULL-DEAE were reacted with N-carbobenzyloxy-l-lysine N-carboxyanhydride (Lys(Z)-NCA), producing the grafted copolymer pullulan-DEAE-g-poly(Z-l-lysine) (PULL-DEAE-g-PZLL), a copolymer with cationic and amphiphilic properties. For the copolymerizations, different monomer concentrations (25, 40, and 55% w/w, relating to pullulan) were used, resulting in three copolymers with different sizes of hydrophobic segments. All polymers were characterized in terms of chemical composition, molar mass, thermal properties, critical aggregation concentration, and cytotoxicity. NMR confirmed the graft copolymerization, and the degree of substitution obtained for each copolymer was 0.13, 0.54, and 0.63, respectively. The results suggest that the physicochemical properties of both pullulan-based cationic derivatives (PULL-DEAE and PULL-DEAE-g-PZLL) could expand the application of modified pullulan for pharmaceutical fields such as drug delivery.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{daSilva2022f,

title = {Antimicrobial Performance of Bioinspired PLA Fabricated via One-Step Plasma Etching with Silver and Copper},

author = {Daniel J. da Silva and Derval S. Rosa},

url = {https://pubs.acs.org/doi/abs/10.1021/acsapm.2c01043},

doi = {10.1021/acsapm.2c01043},

issn = {2637-6105},

year  = {2022},

date = {2022-10-14},

urldate = {2022-10-14},

journal = {ACS Appl. Polym. Mater.},

volume = {4},

number = {10},

pages = {7162--7172},

publisher = {American Chemical Society (ACS)},

abstract = {Nanotechnology has been adopted to mimic a biological system to design artificial nanostructures with properties suitable for advanced applications. In this way, bioinspired bactericidal surfaces with surface nanostructured like insect wings display antimicrobial properties that undergo a physicomechanical mechanism that disrupts the microbial cells, inhibiting their growth and proliferation. Herein, we describe a method to design nanocone patterns on the surface of poly(lactic acid) (PLA) via one step of argon plasma etching in the presence of silver and copper. In this contribution, PLA with nanocone patterns were successfully obtained using 30 and 60 s of plasma etching, mimicking the surface of cicada wings that avoids the attachment of Escherichia coli, which is suitable for self-disinfectant medical devices. However, the plasma etching during 120 s generates a maze-like topographical surface with nanoholes that hampers both the adhesion and proliferation of bacteria on the PLA surface, which are important functional characteristics to fabricate self-disinfecting personal protection equipment for healthcare professionals in hospital environments subject to a wide variety of pathogenic microorganisms that adhere and proliferate on the material surfaces.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}