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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.)

Gelatin-based nanocomposite films: A study on montmorillonite dispersion methods and concentration

Texto completo
Autor(es):
Flaker, Christian H. C. [1] ; Lourenco, Rodrigo V. [1] ; Bittante, Ana M. Q. B. [1] ; Sobral, Paulo J. A. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] USA, FZEA, Dept Food Engn, BR-13635900 Pirassununga, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Journal of Food Engineering; v. 167, n. A, p. 65-70, DEC 2015.
Citações Web of Science: 25
Resumo

Reinforcing films based on biopolymers with nanoparticles could improve their properties. The nanoparticles must be dispersed in water before addition in the film-forming solution, when produced by a wet technique as casting or spreading. Thus, the aim of this research was to study the quality of the dispersion of montmorillonite in water, and its effect on some properties of gelatin films produced using the best dispersion technique. The nanoparticles were dispersed in water with mechanical homogenizer, colloidal mill and ultrasonic processor; then, analyzed for determination of particle size and zeta potential. Subsequently, films were produced by spreading with different nanoparticles concentration, and characterized for determination of some physical and functional properties. The mechanical homogenizer was chosen to process the montmorillonite and to produce the nanocomposite films, which in general, were less glossy, less permeable to water vapor and more hydrophilic than control film. The tensile strength increased from 20 to 40 MPa in the nanocomposite films. The dispersion method used had a slight influence on the quality of dispersions and the critical concentration of montmorillonite was 5 g of MMT/100 g of gelatin. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 11/15784-1 - Estudo da dispersão da nanopartícula em água e seu efeito nas propriedades de filmes nanocompósitos de gelatina
Beneficiário:Christian Humberto Caicedo Flaker
Linha de fomento: Bolsas no Brasil - Mestrado
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