| 热致性共聚酯液晶的研究——以双酚-对苯二甲酸酯为间隔段 |
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| 引用本文： | 张鸿志,管志斌. 热致性共聚酯液晶的研究——以双酚-对苯二甲酸酯为间隔段[J]. 高等学校化学学报, 1989, 10(2): 218 |
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| 作者姓名： | 张鸿志 管志斌 |
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| 作者单位： | 北京大学化学系 |
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| 摘 要： | 热致性共聚酯液晶由于具有优异的热、机械及加工等性能,引起人们对其应用及基础研究的重视。本实验室曾对以不同长度碳链为软间隔段的共聚酯进行了研究,在产物介晶单元含量不高(约20％)时即可表现出明显液晶性。本文选用以双酚A(BPA)或双酚S(BPS)-对苯二甲酸酯为间隔段进行了研究。
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| 关 键 词： | 共酯聚液晶 双酚-A-对苯二甲酸酯间隔段 玻璃化温度 |
| 收稿时间： | 1987-07-13 |
Studies on Thermotropic Liquid Crystalline Copolyesters--Terephthalates of Bisphenols as Rigid Spacers |
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| Zhang Hongzhi,Guan Zhibin. Studies on Thermotropic Liquid Crystalline Copolyesters--Terephthalates of Bisphenols as Rigid Spacers[J]. Chemical Research In Chinese Universities, 1989, 10(2): 218 |
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| Authors: | Zhang Hongzhi Guan Zhibin |
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| Affiliation: | Department of Chemistry, Peking University, Beijing |
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| Abstract: | Two series of copolyesters based on p-acetoxybenzoic acid (Ac-HBA), terephthalic acid(TA) and bisphenol A diacetate(Ac-BPA) or bisphenol S diacetate (Ac-BPS) were prepared by melt polycondensation technique. The copolyesters in a certain extent of compositions were thermotropic with wide liquid crystalline temperature ranges. The minimum amount of mesogenic units derived from Ac-HBA in feed necessary for the appearance of mesomorphic phase is about 10 % mol. Tgs of BPA series copolyesters were essentially constant and close to that of polymer of rigid spacer regardless of compositions. But the Tfs showed a minmum value towards the compositions. |
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| Keywords: | Liquid crystalline copolyesters Terephthalate of bisphenols as rigid Spacer Glass transition Temperature |
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