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Updated: Jul 14, 2026

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Hydrophobic chitosan microparticles: heterogeneous phase reaction of chitosan with hydrophobic carbonyl reagents
Susanne Höhne1, Ralf Frenzel, Andreas Heppe
1Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, Dresden, Germany. susanne.hoehne@chemie.tu-chemnitz.de
Abstract:
Hydrophobically modified chitosan microparticles were produced by various syntheses carried out as heterogeneous phase reactions. Perfluorinated carbonyl components such as carbonic acids and acid chlorides were used as hydrophobization agents. To enhance the layer stability preceding cross-linkages between the chitosan macromolecules were introduced. These cross-linkages involve some of the chitosan amino groups. The use of a highly reactive alkylene-maleic anhydride copolymer produces cross-linkages and hydrophobizes the chitosan layer simultaneously in a one-step reaction. The heterogeneous reactions serve as model reactions for the hydrophobization of chitosan films deposited on supports.
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