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Int. J. Mol. Sci. 2011, 12(2), 1175-1186; doi:10.3390/ijms12021175

Development of a Chitosan-Based Biofoam: Application to the Processing of a Porous Ceramic Material

1,* , 2
1 Laboratoire d’Ingénierie pour les Systèmes Complexes, CEMAGREF, Campus des Cézeaux 24 avenue des Landais—BP 50085, 63172 Aubière Cedex, France 2 Laboratoire Groupe d’Etude des Matériaux Hétérogènes (GEMH—ENSCI EA 3178) Centre Européen de la Céramique—12 rue Atlantis, 87068 Limoges Cedex, France 3 Clermont Université, Laboratoire de Génie Chimique et Biochimique, Université Blaise Pascal, Polytech’ Clermont Ferrand, 24 avenue des Landais BP 206, 63174 Aubière cedex, France
* Author to whom correspondence should be addressed.
Received: 10 November 2010 / Revised: 9 February 2011 / Accepted: 11 February 2011 / Published: 16 February 2011
(This article belongs to the Special Issue Chitins)
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Developing biofoams constitutes a challenging issue for several applications. The present study focuses on the development of a chitosan-based biofoam. Solutions of chitosan in acetic acid were dried under vacuum to generate foams with high-order structures. Chitosan concentration influenced significantly the morphology of developed porosity and the organization of pores in the material. Physico-chemical characterizations were performed to investigate the effects of chitosan concentration on density and thermal conductivity of foams. Even if chitosan-based biofoams exhibit interesting insulating properties (typically around 0.06 W·m−1·K−1), it has been shown that their durabilities are limited when submitted to a wet media. So, a way of application consists to elaborate a ceramic material with open porosity from a slurry prepared with an organic solvent infiltrating the porous network of the foam.
Keywords: chitosan; biofoam; ceramic slurry chitosan; biofoam; ceramic slurry
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mathias, J.-D.; Tessier-Doyen, N.; Michaud, P. Development of a Chitosan-Based Biofoam: Application to the Processing of a Porous Ceramic Material. Int. J. Mol. Sci. 2011, 12, 1175-1186.

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