STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS——POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE)
STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS-POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE)作者机构：Department of Chemistry. Peking University Beijing
出 版 物：《Chinese Journal of Polymer Science》 (高分子科学(英文版))
年 卷 期：1986年第3期
页 面：248-255页
主 题：TCE BTB STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE POLY BHQ CO
摘 要：A series of copolyesters based on bis(4-hydroxybutyl) terephthalate, terephthaloyl chloride andvarious aromatic diols (i.e. hydroquinone, chlorohydroquinone, bromohydroquinone or dihydroxybi-phenyl) was prepared. ~1H-NMR studies revealed that the monomer units had microstructures closeto random distribution in the chains. The copolymers showed composition-dependent liquid crystal-line properties as verified by visual observation of stir opalescence, polarizing microscope, DSC andX-ray diffration. The copolyesters with aromatic diol contents over a certain extent (for chloro-hydroquinone m≥0.33) were thermotropic with wide liquid crystalline temperature ranges. Theintroduction of chlorohydroquinone into the copolyesters could gradually destroy the crystallinityof the polymers but retain the liquid crystalline characteristics.
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