Influence of molecular weight of chitosan on liquid crystalline behavior

Authors
Wang, JW Dong, YM Liu, HN Yuan, Q Mei, XF
Citation
Jw. Wang et al., Influence of molecular weight of chitosan on liquid crystalline behavior, CHEM J CH U, 20(3), 1999, pp. 474-477
Citations number
20
Categorie Soggetti
Chemistry
Journal title
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN journal
02510790 → ACNP
Volume
20
Issue
3
Year of publication
1999
Pages
474 - 477
Database
ISI
SICI code
0251-0790(199903)20:3<474:IOMWOC>2.0.ZU;2-8
Abstract
The lyotropic cholesteic liquid crystalline phase was observed in the dichl oroacetic acid solutions of the three chitosans with different molecular we ights from 2.34 X 10(6) to 0.44 X 10(6) but with the same degree of deacety lation, The critical concentration of chitosan decreased when its molecular weight increased and was higher than chitin with the same degree of polyme rization, The value of average pitch obtained by both small angle light sca ttering and polarized microscopy decreased when the molecular weight of chi tosan increased.