Premium
Novel cellulose derivatives. I. Liquid crystal phase formation in tri‐ O ‐α‐naphthylmethyl cellulose solutions
Author(s) -
Davé Vipul,
Frazier Charles E.,
Glasser Wolfgang G.
Publication year - 1993
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/app.1993.070490920
Subject(s) - dimethylacetamide , cellulose , diethylamine , liquid crystal , dimethyl sulfoxide , derivative (finance) , solvent , phase (matter) , sulfoxide , hydroxypropyl cellulose , chemistry , polymer chemistry , materials science , organic chemistry , polymer , economics , optoelectronics , financial economics
Tri‐ O ‐α‐naphthylmethyl cellulose was prepared by homogeneous phase reaction using SO 2 –diethylamine (DEA)–dimethyl sulfoxide (DMSO) as the solvent system. Observations made by dynamic mechanical spectrometry and by cross‐polarized optical microscopy revealed liquid crystalline behavior for the concentrated solutions of tri‐ O ‐α‐naphthylmethyl cellulose in dimethylacetamide (DMAc). Experimental and calculated (predicted) critical volume fraction of the derivative, V c p , did not show agreement. It is determined that V c p is affected by bulky substituents on the cellulose backbone to some extent. © 1993 John Wiley & Sons, Inc.