文献类型：期刊文献

英文题名：Phase equilibria of polymer dispersed liquid crystal systems in the presence of an external electrical field

作者：Chen, Tao[1]; Zhang, Liangshun[1]; Li, Tao[1]; Lin, Jiaping[1]; Lin, Shaoliang[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2007

卷号：45

期号：14

起止页码：1898

外文期刊名：JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

收录：;EI(收录号：20073110742660);WOS:【SCI-EXPANDED(收录号:WOS:000247763200014)】；

语种：英文

外文关键词：electrical field; lattice models; phase behavior; phase diagrams; polymer dispersed liquid crystals

摘要：The effect of an external electrical field on phase behaviors is reported for polymer dispersed liquid crystal films of 4 '-pentyl-4-biphenylcarbonitrile/poly(methyl methacrylate) binary mixtures with various polymer molecular weights. The experimental results show that increasing the molecular weight of the polymer or the electrical field intensity can give rise to an increase in the phase-transition temperature and a widening of the binary phase region. The lattice theory, regarding a binary system consisting of a rigid nematic liquid crystal and a random polymer, has been extended to the case in which an external electrical field is present. A comparison of the theoretical predictions with the experimental results has been carried out, and satisfactory agreement has been found. (c) 2007 Wiley Periodicals, Inc.