Preparation and characterization of fully deacetylated chitosan |
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| Authors: | A. Domard M. Rinaudo |
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| Affiliation: | Centre de Recherches sur les Macromolécules Végétales, Laboratoire Propre de CNRS, Associé à l''Université Scientifique et Médicale de Grenoble, 53 X, 38041 Grenoble cedex, France |
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| Abstract: | A new method for N-deacetylation of chitosan is proposed in which a polymer free of N-acetyl groups is obtained without much decrease in molecular weight. Different methods for determining the degree of acetylation were used, mainly i.r. spectroscopy and conductimetry. Average molecular weights were determined by membrane osmometry and light scattering; a polydispersity <2 was found. This well defined amino-polymer can be used for investigation of chelating properties. |
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| Keywords: | Polysaccharide chitosan characterization light scattering osmometry i.r. spectroscopy |
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