ORIENTATIONAL ORDER IN LIQUID-CRYSTAL SOLUTIONS OF POLYHEXYLISOCYANATE .1. INFRARED DICHROISM

被引：6
|
作者：
WANG, HH
DUPRE, DB
机构：
[1] Department of Chemistry, University of Louisville, Louisville
来源：
JOURNAL OF CHEMICAL PHYSICS | 1992年 / 96卷 / 02期
关键词：
D O I：
10.1063/1.462136
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The concentration and molecular weight dependence of the order parameter was measured for liquid crystalline solutions of the semiflexible, extended chain polymer polyhexylisocyanate in chloroform and toluene. Order parameters were determined from the infrared dichroism of the stretching vibration of the C-N bond in the helical polymer backbone. Results are compared with predictions of a version of the Onsager theory for wormlike chains, extended to higher solute densities by the use of a decoupling approximation.
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页码：1523 / 1529
页数：7
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