| STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS——POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE) |
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| 引用本文： | 张鸿志,宁新. STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS——POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE)[J]. 高分子科学, 1986, 0(3): 248-255 |
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| 作者姓名： | 张鸿志 宁新 |
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| 作者单位： | Department of Chemistry. Peking University，Beijing，Department of Chemistry. Peking University，Beijing |
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| 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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| 收稿时间： | 1985-09-07 |
STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS-POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE)* |
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| ZHANG Hongzhi,NING Xin. STUDIES ON THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTERS-POLY (ARYLENE TEREPHTHALATE-CO-BUTYLENE TEREPHTHALATE)*[J]. Chinese Journal of Polymer Science, 1986, 0(3): 248-255 |
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| Authors: | ZHANG Hongzhi NING Xin |
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| Affiliation: | Department of Chemistry. Peking University; Beijing |
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| Abstract: | 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.The introduction of chlorohydroquinone into the copolyesters could gradually destroy the crystallinity of the polymers but retain the liquid crystalline characteristics. |
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