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Thermotropic behavior of cholesterol‐linked polysaccharides
Author(s) -
Shaikh V. A. E.,
Maldar N. N.,
Lonikar S. V.,
Rajan C. R.,
Ponrathnam S.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981003)70:1<195::aid-app19>3.0.co;2-6
Subject(s) - thermotropic crystal , starch , polymer , polysaccharide , cellulose , polymer chemistry , materials science , chemistry , polarized light microscopy , organic chemistry , liquid crystalline , physics , optics
Cholesterol‐linked polysaccharides were prepared by reacting monocholesterylsuccinate (ChMS) with cellulose acetate [AC; degree of substitution (DS) 1.00, 1.80, and 2.33], ethyl cellulose (EC; DS 2.46), starch, and hydroxyethyl starch (HES; molar substitution, 0.05–0.07). The degree of ChMS substitution ranged from 0.27 to 1.29. The polymers were characterized by IR, NMR, DSC, and hot‐stage coupled polarizing microscopy. Polymers with a higher DS of ChMS showed a thermotropic liquid crystalline behavior. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 195–201, 1998