文献类型：期刊文献

英文题名：Liquid crystallization in lyotropic liquid crystalline polymers

作者：Lin, Jiaping[1]; Zhu, Jian[1]; Zhou, Dafei[1]

机构：[1]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China

年份：2000

卷号：36

期号：2

起止页码：309

外文期刊名：EUROPEAN POLYMER JOURNAL

收录：;EI(收录号：2000405300657);WOS:【SCI-EXPANDED(收录号:WOS:000084297300010)】；

语种：英文

外文关键词：Anisotropy - Crystal growth - Crystallization - Kinetic theory - Nucleation - Numerical methods - Phase transitions - Shearing - Thermal effects

摘要：Kinetics of the phase transition from isotropic to liquid crystal state: which is by analogy termed as liquid crystallization, was reported for the poly(p-phenylene terephthalamide/H2SO4 system. Experimental results show that the effect of the temperature on the liquid crystallization process is marked while the polymer concentration within the experimental condition employed has a negligible influence. Some preliminary results also indicate that the liquid crystallization process is accelerated considerably after an external shearing is applied. Assuming that the liquid crystallization is a nucleation followed by the growth process, a theoretical approach was attempted in this work. The theory developed provides a reasonable interpretation of the liquid crystallization kinetics in the lyotropic liquid crystalline polymers. (C) 1999 Elsevier Science Ltd. All rights reserved.