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Registros recuperados : 334 | |
142. | | NAUE, C. R.; GALVÍNCIO, J. D.; MOURA, M. S. B. de; COSTA, V. S. de O. Resposta espectral de espécies da Caatinga, In: SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO NO SEMIÁRIDO BRASILEIRO, 3., 2011, Juazeiro. Experiências para mitigação e adaptação. Petrolina: Embrapa Semiárido, 2011. 1 CD-ROM. (Embrapa Semiárido. Documentos, 239). Biblioteca(s): Embrapa Semiárido. |
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143. | | DINARDO-MIRANDA, L. L.; ANJOS, I. A. dos; COSTA, V. P. da; FRACASSO, J. V. Resistance of sugarcane cultivars to Diataea saccharalis. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 1, p. 1-7, jan. 2012. Título em português: Resistência de cultivares de cana?de?açúcar a Diatraea saccharalis. Biblioteca(s): Embrapa Unidades Centrais. |
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152. | | SILVA, R. S. da; COSTA, V. L. da; ASSIS, G. M. L. de. Variabilidade genética de caracteres agronômicos entre progênies de amendoim forrageiro avaliadas em Rio Branco, Acre. In: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 25., 2016, Rio Branco/Cruzeiro do Sul. Inovação: sustentabilidade e desenvolvimento regional: anais. Rio Branco, AC: Edufac, 2016. p. 202. Biblioteca(s): Embrapa Acre. |
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154. | | BORBA, R. P.; CAMARGO, O. A. de; BETTIOL, W.; COSTA, V. L. Variação do balanço de cargas superficiais ao longo do perfil do solo e sua influência na mobilidade de ânios (no3, so4, cl) na zona não saturada. In: CONGRESSO BRASILEIRO DE GEOQUÍMICA, 10., SIMPÓSIO DE GEOQUÍMICA DOS PAÍSES DO MERCOSUL, 2., 2005, Praia de Porto de Galinhas/PE. Anais... Praia de Porto de Galinhas/PE: SBG, 2005. p. 1-4. Biblioteca(s): Embrapa Meio Ambiente. |
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155. | | OLIVEIRA, E. J. de; AUD, F. F.; MORALES, C. F. G.; SANTOS, V. da S.; KOTWISKI, F.; COSTA, V. Agrupamento não hierárquico de acessos de germoplasma de mandioca (Manihot esculenta Crantz) com base em características quantitativas. In: CONGRESSO BRASILEIRO DE MANDIOCA, 15., 2013, Salvador. Inovação e sustentabilidade: da raiz ao amido: trabalhos apresentados. Salvador: CBM: Embrapa, 2013. 1 CD-ROM. Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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157. | | SANTIAGO, M. A. M.; BENEVENGA, S.; COSTA, V. C. da; SANTIAGO, C.; PIGNATARO, I.; SANTOS, M. N. dos; TAVARES, A. Acao anti-helmintica do levo-tetramisole. I. Ovinos. Revista de Medicina Veterinaria, v.7, n.2, p.117-130, nov. 1971. Biblioteca(s): Embrapa Pantanal. |
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159. | | ARZABE, C.; COSTA, V. C.; ALVES, H. M. R.; MARTINS, A. L. da S.; BUENO, Y. M. Challenges and perspectives. In: ARZABE, C.; COSTA, V. C. (ed.). Gender equality: contributions of Embrapa. Brasília, DF: Embrapa, 2020. E-book. (Sustainable development goal, 5). Biblioteca(s): Embrapa Solos. |
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160. | | BORGES, V. P.; SILVA, B. B. DA; SOBRINHO, J. E.; OLIVEIRA, A. D. de; FERREIRA, R. DA C.; COSTA, V. Coeficientes de cultivo do meloeiro cultivado com Mulch plástico obtidos com balanço de energia pela razão de Bowen. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 17., 2011, Guarapari. Riscos climáticos e cenários agrícolas futuros: anais. Guarapari: Incaper, 2011. 1 CD-ROM. Biblioteca(s): Embrapa Cerrados. |
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Registros recuperados : 334 | |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
03/11/2023 |
Data da última atualização: |
03/11/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 4 |
Autoria: |
COSTA, V. P. V. da; SANTOS, D. M. dos; ANDRE, R. S.; LOPES, R. G.; INADA, N. M.; CORREA, D. S. |
Afiliação: |
Nanotechnology National Laboratory for Agriculture (LNNA); Nanotechnology National Laboratory for Agriculture (LNNA); Nanotechnology National Laboratory for Agriculture (LNNA); University of Sao Paulo (USP); University of Sao Paulo (USP); DANIEL SOUZA CORREA, CNPDIA. |
Título: |
Bilayer nonwovens using natural rubber, poly(lactic acid) and bactericidal nanoparticles for wound dressings |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Materials Today Communications, v. 37, 107260, 2023. |
Páginas: |
13 p. |
ISSN: |
2352-4928 |
DOI: |
https://doi.org/10.1016/j.mtcomm.2023.107260 |
Idioma: |
Inglês |
Conteúdo: |
ABSTRACT Wound healing poses a significant challenge in healthcare, impacting not only on patients? quality of life but also placing a substantial financial burden on healthcare systems. Bilayer nonwovens have emerged as a promising solution for wound dressings due to their porous morphology, providing a high surface area for cellular adhesion and growth, and their permeability, allowing proper oxygen and fluid exchange to promote wound healing. When bactericide materials are added to the formulation, they can decrease or prevent infection caused by microorganisms, further aiding the healing process. Solution blow spinning is an appealing technique for creating bilayer nonwovens as it can produce high yields at a low cost. Yet, even though natural rubber boasts a well-established safety record in biomaterials, it remains an underexplored candidate for generating micronanofibrous structures. In this study, solution blow spinning was employed to fabricate bilayer composite nonwovens for wound dressing materials. The material architecture consisted of a bottom layer composed of a blend of natural rubber, poly(lactic acid) (PLA), and polyethylene glycol in the respective proportion of 2:1:3 w/ w and a top layer composed of PLA and ZnO nanoparticles added in concentrations of 1%, 2.5%, and 5% based on the PLA mass of this layer. The top layer was further functionalized with Ag nanoparticles through spraying. The obtained materials demonstrated satisfactory hydrophobicity for cellular adhesion in the bottom layer, ranging from 51.95◦ to 92.20◦ of water sessile drop contact angle, and tunable mechanical strength, which could be controlled by varying the content of ZnO nanoparticles. Additionally, the material showed antimicrobial properties due to the presence of added Ag nanoparticles, able to inhibit E. coli, S. enterica serovar Typhimurium, and S. aureus by direct contact. Besides, the nonwoven prevented the passage of microorganisms due to the pore size of the structure. Overall, the unique properties of the developed material, such as its low cost, ease of production, and remarkable wound-healing properties, make it a promising candidate for wound dressing applications. MenosABSTRACT Wound healing poses a significant challenge in healthcare, impacting not only on patients? quality of life but also placing a substantial financial burden on healthcare systems. Bilayer nonwovens have emerged as a promising solution for wound dressings due to their porous morphology, providing a high surface area for cellular adhesion and growth, and their permeability, allowing proper oxygen and fluid exchange to promote wound healing. When bactericide materials are added to the formulation, they can decrease or prevent infection caused by microorganisms, further aiding the healing process. Solution blow spinning is an appealing technique for creating bilayer nonwovens as it can produce high yields at a low cost. Yet, even though natural rubber boasts a well-established safety record in biomaterials, it remains an underexplored candidate for generating micronanofibrous structures. In this study, solution blow spinning was employed to fabricate bilayer composite nonwovens for wound dressing materials. The material architecture consisted of a bottom layer composed of a blend of natural rubber, poly(lactic acid) (PLA), and polyethylene glycol in the respective proportion of 2:1:3 w/ w and a top layer composed of PLA and ZnO nanoparticles added in concentrations of 1%, 2.5%, and 5% based on the PLA mass of this layer. The top layer was further functionalized with Ag nanoparticles through spraying. The obtained materials demonstrated satisfactory hydrophobicity for cell... Mostrar Tudo |
Palavras-Chave: |
Asymmetric membrane; Natural polymers; Natural rubber; Skin infection. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03026naa a2200265 a 4500 001 2157764 005 2023-11-03 008 2023 bl uuuu u00u1 u #d 022 $a2352-4928 024 7 $ahttps://doi.org/10.1016/j.mtcomm.2023.107260$2DOI 100 1 $aCOSTA, V. P. V. da 245 $aBilayer nonwovens using natural rubber, poly(lactic acid) and bactericidal nanoparticles for wound dressings$h[electronic resource] 260 $c2023 300 $a13 p. 520 $aABSTRACT Wound healing poses a significant challenge in healthcare, impacting not only on patients? quality of life but also placing a substantial financial burden on healthcare systems. Bilayer nonwovens have emerged as a promising solution for wound dressings due to their porous morphology, providing a high surface area for cellular adhesion and growth, and their permeability, allowing proper oxygen and fluid exchange to promote wound healing. When bactericide materials are added to the formulation, they can decrease or prevent infection caused by microorganisms, further aiding the healing process. Solution blow spinning is an appealing technique for creating bilayer nonwovens as it can produce high yields at a low cost. Yet, even though natural rubber boasts a well-established safety record in biomaterials, it remains an underexplored candidate for generating micronanofibrous structures. In this study, solution blow spinning was employed to fabricate bilayer composite nonwovens for wound dressing materials. The material architecture consisted of a bottom layer composed of a blend of natural rubber, poly(lactic acid) (PLA), and polyethylene glycol in the respective proportion of 2:1:3 w/ w and a top layer composed of PLA and ZnO nanoparticles added in concentrations of 1%, 2.5%, and 5% based on the PLA mass of this layer. The top layer was further functionalized with Ag nanoparticles through spraying. The obtained materials demonstrated satisfactory hydrophobicity for cellular adhesion in the bottom layer, ranging from 51.95◦ to 92.20◦ of water sessile drop contact angle, and tunable mechanical strength, which could be controlled by varying the content of ZnO nanoparticles. Additionally, the material showed antimicrobial properties due to the presence of added Ag nanoparticles, able to inhibit E. coli, S. enterica serovar Typhimurium, and S. aureus by direct contact. Besides, the nonwoven prevented the passage of microorganisms due to the pore size of the structure. Overall, the unique properties of the developed material, such as its low cost, ease of production, and remarkable wound-healing properties, make it a promising candidate for wound dressing applications. 653 $aAsymmetric membrane 653 $aNatural polymers 653 $aNatural rubber 653 $aSkin infection 700 1 $aSANTOS, D. M. dos 700 1 $aANDRE, R. S. 700 1 $aLOPES, R. G. 700 1 $aINADA, N. M. 700 1 $aCORREA, D. S. 773 $tMaterials Today Communications$gv. 37, 107260, 2023.
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