Chitosan and its hydrophobic derivatives: Preparation and aggregation in dilute aqueous solutions

This review surveys the main methods of preparing chitosan and its hydrophobic derivatives and their influence on the microstructure of polymers. The experimental data on the aggregation of these polymers in dilute aqueous solutions are summarized. Basic factors affecting aggregation are analyzed, a...

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Published inPolymer Science. Series A Vol. 54; no. 7; pp. 552 - 572
Main Authors Philippova, O. E., Korchagina, E. V.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.07.2012
Springer Nature B.V
Subjects
Agglomeration
Aggregates
Aqueous solutions
Attraction
Charging
Chemistry
Chemistry and Materials Science
Chitosan
Derivatives
Dilution
Polymer Sciences
Polymer Science Series
Chitin
Chitosan
Aggre Gate
Chitosan Chain
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Summary:This review surveys the main methods of preparing chitosan and its hydrophobic derivatives and their influence on the microstructure of polymers. The experimental data on the aggregation of these polymers in dilute aqueous solutions are summarized. Basic factors affecting aggregation are analyzed, and its general regularities are revealed. It is shown that, in the case of both chitosan and its hydrophobic derivatives, the formation of aggregates is governed by the competition of attraction of associating groups promoting aggregation and their repulsion arising from the presence of charged units and counterions hindering aggregation. Various aggregate models that were proposed for chitosan derivatives with different main-chain lengths and different contents of associating groups are discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0965-545X
1555-6107
DOI:10.1134/S0965545X12060107