title: Hydrophobic chitosan microparticles: heterogeneous phase reaction of chitosan with hydrophobic carbonyl reagents.
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.
authors.affiliation: Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, Dresden, Germany. susanne.hoehne@chemie.tu-chemnitz.de
authors.forename: Susanne
authors.initials: S
authors.lastname: Höhne
authors.forename: Ralf
authors.initials: R
authors.lastname: Frenzel
authors.forename: Andreas
authors.initials: A
authors.lastname: Heppe
authors.forename: Frank
authors.initials: F
authors.lastname: Simon
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010316:Particle Size; D013055:Spectrophotometry, Infrared
chemical_list: D003432:Cross-Linking Reagents; D048271:Chitosan