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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Microstructure and physical properties of nano-biocomposite films based on cassava starch and laponite

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Autor(es):
Valencia, German Ayala [1] ; Luciano, Carla Giovana [1] ; Lourenco, Rodrigo Vinicius [1] ; do Amaral Sobral, Paulo Jose [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, Pirassununga, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: International Journal of Biological Macromolecules; v. 107, n. B, p. 1576-1583, FEB 2018.
Citações Web of Science: 2
Resumo

The aim of this research was to study the effects of laponite concentrations on some properties of nano-biocomposite films based on cassava starch, focusing mainly the relation between the properties of the surface microstructure and roughness, water contact angle and gloss. Nano-biocomposite films were produced by casting. We analyzed gloss, color, opacity, water contact angle, crystallinity by X-ray diffraction, and microstructure by scanning electron microscopy and atomic force microscopy. Texture parameters (energy, entropy and fractal dimension) were extracted from micrographs. We observed a great impact of laponite in the morphology of nano-biocomposite films. Texture parameters correlated with surface heterogeneity and roughness. Finally, surface roughness affected the surface hydrophilicity of nano-biocomposite films. Laponite platelets were exfoliated and/or intercalated with amylose and amylopectin chains. This research reports new information on the effects of laponite concentrations on the morphological, optical and wetting properties of nano-biocomposite films aiming future industrial applications. (C) 2017 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 12/24047-3 - Propriedades físicas de filmes a base de biopolímeros reforçados com laponita
Beneficiário:Germán Ayala Valencia
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 13/07914-8 - FoRC - Centro de Pesquisa em Alimentos
Beneficiário:Bernadette Dora Gombossy de Melo Franco
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs