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Stabilisation of the Secondary Structure of Chitosan Gels during the Preparation of Composites |
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| Authors: | A Djelad A Morsli M Robitzer A Bengueddach F Di Renzo F Quignard |
| Institution: | 1. Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Matériaux Avancés pour la Catalyse et la Santé, ENSCM, 8 rue Ecole Normale, 34296 Montpellier (France)
Laboratoire de Chimie Des Matériaux, Université Oran Es-Senia, B.P 1524 Elmenaouar, Oran (Algeria);2. Département de Chimie, Faculté des Sciences, USTO, B.P.1505 Elmenaouar, Oran (Algeria);3. Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Matériaux Avancés pour la Catalyse et la Santé, ENSCM, 8 rue Ecole Normale, 34296 Montpellier (France);4. Laboratoire de Chimie Des Matériaux, Université Oran Es-Senia, B.P 1524 Elmenaouar, Oran (Algeria) |
| Abstract: | Summary: Zeolite-chitosan composites have been prepared by encapsulation of zeolites by a gelling solution of chitosan or by in-situ synthesis of zeolites inside a chitosan gel. The preparation of the composite implies modifications of both components. Zeolites are dealuminated by the acid solution in which chitosan is dissolved and the morphology of the chitosan fibrils is stabilized by iniorganic species issued from the dealumination of the zeolites or from their synthesis medium. Zeolite-bearing chitosan xerogels present surface area and porosity similar to the textural properties of chitosan aerogels. |
| Keywords: | aerogels chitosan inorganic-polymer composites self-assembled systems textural properties |