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1. | | FIN, S. S.; MARCHESAN, E.; GUBIANI, P. I.; FORENZENA, J. A. P.; MURARI, M. S.; COELHO, L. L.; CARGNELUTTI FILHO, A.; ARAMBURU, B. B. Duration of the effects of scarification and raised bed associated with vegetation cover on soybean yield on an Alfisol. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, p. 1230-1238, Nov. 2018. Título emportuguês: Duração dos efeitos de escarificação e camalhão associados à cobertura vegetal na produção de soja em Planossolo. Biblioteca(s): Embrapa Unidades Centrais. |
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Registros recuperados : 1 | |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
14/04/2020 |
Data da última atualização: |
16/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CORRÊA, A. C.; TEODORO, K. B. R.; SIMÃO, J. A.; CLARO, P. I. C.; TEIXEIRA, E. M.; MATTOSO, L. H. C.; MARCONCINI, J. M. |
Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; JOSE MANOEL MARCONCINI, CNPDIA. |
Título: |
Cellulose nanocrystals from curaua fibers and poly [ethylene-co-(vinyl acetate)] nanocomposites: Effect of drying process of CNCs on thermal and mechanical properties. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Polymer Composites, v. 41, n. 5, 2020. |
Páginas: |
1736-1748 |
DOI: |
10.1002/pc.25493 |
Idioma: |
Inglês |
Conteúdo: |
Poly[ethylene-co-(vinyl acetate)] (EVA) and cellulose nanocrystals (CNCs)from curaua fibers were used to obtain nanocomposites. Due to polarity thatacetate groups promote in EVA, they tend to present better affinity with cellu-lose nanostructures without compatibilizers. In addition, the influence of thedrying conditions of CNCs suspension on their dispersion through the matrixwas also evaluated. CNCs were obtained via acid hydrolysis in a mixture of sul-furic and hydrochloric acids. Part of CNCs in neutral suspension was freeze-dried and part was dried in an oven with air circulation. The dried CNCs wereincorporated into EVA at concentrations of 1, 3, and 5 wt% of each CNCs. Thecompositions were processed in a corotating twin-screw extruder and injectionmolded. Morphological results showed better dispersion and adhesion offreeze-dried nanocrystals into EVA, and these nanocomposites also presentedincrease in elastic modulus and elongation at break, resulting in more resilientand elastic materials. |
Palavras-Chave: |
Cellulose nanocrystals; Drying effect; EVA. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01814naa a2200253 a 4500 001 2121646 005 2022-08-16 008 2020 bl uuuu u00u1 u #d 024 7 $a10.1002/pc.25493$2DOI 100 1 $aCORRÊA, A. C. 245 $aCellulose nanocrystals from curaua fibers and poly [ethylene-co-(vinyl acetate)] nanocomposites$bEffect of drying process of CNCs on thermal and mechanical properties.$h[electronic resource] 260 $c2020 300 $a1736-1748 520 $aPoly[ethylene-co-(vinyl acetate)] (EVA) and cellulose nanocrystals (CNCs)from curaua fibers were used to obtain nanocomposites. Due to polarity thatacetate groups promote in EVA, they tend to present better affinity with cellu-lose nanostructures without compatibilizers. In addition, the influence of thedrying conditions of CNCs suspension on their dispersion through the matrixwas also evaluated. CNCs were obtained via acid hydrolysis in a mixture of sul-furic and hydrochloric acids. Part of CNCs in neutral suspension was freeze-dried and part was dried in an oven with air circulation. The dried CNCs wereincorporated into EVA at concentrations of 1, 3, and 5 wt% of each CNCs. Thecompositions were processed in a corotating twin-screw extruder and injectionmolded. Morphological results showed better dispersion and adhesion offreeze-dried nanocrystals into EVA, and these nanocomposites also presentedincrease in elastic modulus and elongation at break, resulting in more resilientand elastic materials. 653 $aCellulose nanocrystals 653 $aDrying effect 653 $aEVA 700 1 $aTEODORO, K. B. R. 700 1 $aSIMÃO, J. A. 700 1 $aCLARO, P. I. C. 700 1 $aTEIXEIRA, E. M. 700 1 $aMATTOSO, L. H. C. 700 1 $aMARCONCINI, J. M. 773 $tPolymer Composites$gv. 41, n. 5, 2020.
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