Michael Reaction of Chitosan with Various Acryl Reagents in Water

A Michael reaction of chitosan was conducted in water containing acetic acid with various acryl reagents. The degree of substitution could be controlled by temperature, reaction time, and the amount of acryl reagents. Although the modified chitosan derivatives with acrylic acid esters showed water-s...

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Bibliographic Details
Published in:Biomacromolecules 2003-09, Vol.4 (5), p.1250-1254
Main Authors: Sashiwa, Hitoshi, Yamamori, Naoki, Ichinose, Yoshifumi, Sunamoto, Junzo, Aiba, Sei-ichi
Format: Article
Language:English
Subjects:
Acylation
Applied sciences
Biocompatible Materials - chemistry
Biocompatible Materials - metabolism
Biodegradation, Environmental
Chitin - analogs & derivatives
Chitin - chemistry
Chitin - metabolism
Chitosan
Exact sciences and technology
Magnetic Resonance Imaging
Natural polymers
Physicochemistry of polymers
Sewage
Solubility
Starch and polysaccharides
Water
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Summary:A Michael reaction of chitosan was conducted in water containing acetic acid with various acryl reagents. The degree of substitution could be controlled by temperature, reaction time, and the amount of acryl reagents. Although the modified chitosan derivatives with acrylic acid esters showed water-solubility, that with poly(ethylene glycol) acrylate, however, turned to water-insoluble material by lyophilization. Good biodegradation was observed in modified chitosan derivatives by standard activated sludge.
ISSN:1525-7797
1526-4602
DOI:10.1021/bm030022o