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Published on: June 17, 2014
Processing and characterization of waxy maize starch films plasticized by sorbitol and reinforced with starch
Jérémie Viguié1, Sonia Molina-Boisseau, Alain Dufresne
1Ecole Française de Papeterie et des Industries Graphiques de Grenoble, Institut National Polytechnique de Grenoble, BP 65, 38402 Saint Martin d'Hères Cedex, France.
Abstract:
Nanocomposites films have been processed from a filler and a matrix having the same nature, i.e. waxy maize starch. The filler consists of nanoplatelet-like starch particles obtained as an aqueous suspension by acid hydrolysis of starch granules and the matrix was prepared by plasticization and disruption of starch granules with water and sorbitol. Nanocomposite films were obtained by casting and evaporating the mixture of the aqueous suspension of starch nanocrystals with the gelatinized starch. The resulting films were conditioned before testing and the effect of accelerated ageing in moist atmosphere was investigated. The thermal properties of the nanocomposite films were determined from DSC measurements and the mechanical characterization was performed in both the linear and nonlinear range.
