Главная страница
russian   english
16+
<< back

Title of Article

Viscous properties of chitosan solutions and its reactivity


Issue
4
Date
2008

Article type
scientific article
UDC
547.995.12
Pages
59-64
Keywords
 


Authors
Fedoseeva E.N.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Smirnova L.A.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Fedoseev V.B.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo


Abstract
The viscosity properties of diluted and moderately concentrated chitosan solutions in water solutions of acetic and hydrochloric acids have been investigated. It has been found that there exists a narrow interval of acid concentrations where the viscosity anomaly degenerates. By using viscosimetry, a helix-coil conformational transition of chitosan macromolecules at the change of acid concentration has been established. It has been shown that the conformation of macromolecules makes an essential impact on the efficiency of reactions with chitosan, as exemplified by the production of its oligomers by means of polyglucosamine radical destruction.

File (in Russian)