Preparation of chitosan gel
Physical Organic Chemistry Laboratory, Science Faculty of Sfax, 3018, Sfax, Sfax University, Tunisia
2 Material, Environment and Energy Laboratory, Science Faculty of Gafsa, 2112, Gafsa, Gafsa University, Tunisia
3 Laboratory of Aggregates, Interfaces and Materials for Energy, Charles Gerhardt Institute, Montpellier 2 University, France
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Aerogel conditioning of the chitosan makes it possible to prepare porous solids of significant specific surface. The increase in the chitosan concentration or the degree of acetylation decreases the specific surface of the synthesized chitosan gel. Whereas drying with supercritical CO2 more effectively makes it possible to preserve the volume of the spheres of gel and to have a more significant specific surface in comparison with evaporative drying.
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