Water soluble derivatives obtained by controlled chemical modifications of chitosan

Chemical modifications of polysaccharides are increasingly studied as they have the potential of providing new applications for such abundant polymers. Water soluble chitosan derivatives (quaternized and N-carboxylated chitosans) are prepared, using techniques which allow homogeneous modifications w...

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Bibliographic Details
Published in:Carbohydrate polymers 1994, Vol.24 (3), p.209-214
Main Authors: Dung, Pham le, Milas, Michel, Rinaudo, Marguerite, Desbrières, Jacques
Format: Article
Language:English
Subjects:
Applied sciences
Chemical Sciences
Exact sciences and technology
Natural polymers
Physicochemistry of polymers
Polymers
Starch and polysaccharides
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Summary:Chemical modifications of polysaccharides are increasingly studied as they have the potential of providing new applications for such abundant polymers. Water soluble chitosan derivatives (quaternized and N-carboxylated chitosans) are prepared, using techniques which allow homogeneous modifications without any sharp decrease in molecular weight, and characterized using NMR spectroscopy and viscometry. In addition a new method for nearly complete deacetylation of chitin is proposed and the role of the acid used for solubilizing chitosan derivatives is mentioned.
ISSN:0144-8617
1879-1344
DOI:10.1016/0144-8617(94)90132-5