STUDY OF MOLECULAR-DYNAMICS OF A NEMATIC MAIN-CHAIN LIQUID-CRYSTALLINE POLYESTER BY DIELECTRIC-SPECTROSCOPY

被引：3

作者：

MUCHA, M ^{[1
]}

BLUMSTEIN, A ^{[1
]}

机构：

[1] UNIV MASSACHUSETTS,DEPT CHEM,LOWELL,MA 01854

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 249卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/10587259408038656

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Dielectric spectroscopy was applied to study the molecular dynamics of a nematic main-chain liquid crystalline polyester using a Du Pont Dielectric Analyser. The dielectric measurements covered a frequency range from 0.03 to 100000Hz and a temperature range from -100 to 160 degrees C leading from the transition region up to the isotropic fluid region. Dielectricrelaxation processes alpha,beta,gamma and delta were observed and analysed. Apparent activation energies of the processes were calculated.

引用

页码：61 / 74

页数：14