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Processing and characterization of waxy maize starch films plasticized by sorbitol and reinforced with starch nanocrystals |
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| Authors: | Viguié Jérémie Molina-Boisseau Sonia Dufresne Alain |
| Institution: | 1. Ecole Fran?aise de Papeterie et des Industries Graphiques de Grenoble, Institut National Polytechnique de Grenoble (EFPG‐INPG), BP 65, 38402 Saint Martin d'Hères Cedex, France;2. Centre de Recherches sur les Macromolécules Végétales (CERMAV), ICMG‐CNRS, affiliated with Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France;3. Ecole Fran?aise de Papeterie et des Industries Graphiques de Grenoble, Institut National Polytechnique de Grenoble (EFPG‐INPG), BP 65, 38402 Saint Martin d'Hères Cedex, FranceEcole Fran?aise de Papeterie et des Industries Graphiques de Grenoble, Institut National Polytechnique de Grenoble (EFPG‐INPG), 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. |
| Keywords: | nanocomposites nanocrystals nanoparticles polysaccharides starch thermoplastic starch |
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