文献类型：期刊文献

英文题名：MORPHOLOGICAL-STUDIES OF BISPHENOL SERIES THERMOTROPIC LIQUID-CRYSTALLINE WHOLLY AROMATIC COPOLYESTERS

作者：Zhao, Zhouming[1]; Wu, Xuqin[1]; Lin, Yongwei[1]; McLean, John[1]

机构：[1]E CHINA UNIV CHEM TECHNOL,DEPT POLYMER MAT SCI & ENGN,SHANGHAI 200237,PEOPLES R CHINA

年份：1994

卷号：52

期号：11

起止页码：1529

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：1994091343770);WOS:【SCI-EXPANDED(收录号:WOS:A1994NM29500001)】；

语种：英文

外文关键词：Copolymers - Deformation - Light polarization - Light scattering - Microscopic examination - Molten materials - Morphology - Phenols - Relaxation processes - Textures - Thermal effects - Thermotropic liquid crystals

摘要：A family of aromatic thermotropic liquid crystal (TLC) copolyesters are prepared based on terephthalic acid (TPA), isophthalic acid (IPA), p-hydroxybenzoic acid (HBA), and a family of bisphenols. The morphological behaviors of the copolyesters are studied by using polarized optical microscopy, small-angle light scattering (SALS), and depolarized light intensity (DLI) analysis. The copolyester melts exhibit nematic mesophase textures within wide temperature ranges without showing transitions to isotropic phases. The textures under different temperatures and deformation conditions are investigated. Scattering patterns of the mesophases change greatly during shear deformation and relaxation. The early formation of the mesophases is a one-dimension heterogeneous nucleation based on isothermal condition. (C) 1994 John Wiley & Sons, Inc.