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| 新的含T-型二维液晶基元的液晶高分子的合成 | |
| 引用本文： | 李自法,周其凤.新的含T-型二维液晶基元的液晶高分子的合成[J].高等学校化学学报,1994,15(11):1723-1726. |
| 作者姓名： | 李自法 周其凤 |
| 作者单位： | 1. 郑州大学材料工程系, 郑州, 450052; 2. 北京大学化学系 |
| 摘 要： | 采用低温溶液聚合方法,以N-(2,5-二羟基苯)亚甲基-4-取代苯胺和不同结构的二酰氯为单体,合成了两类新的高分子。聚合物的液晶行为用DSC、偏光显微镜和X射线衍射进行了表征,发现其中一类为向列型热致液晶高分子,另一类则无液晶性。随单体结构的改变,聚合物的特性粘数、熔点(Tm)和液晶态的清亮点(Ti)均呈现规律性变化。 |
| 关 键 词： | 液晶高分子 T－型二维液晶基元 高分子的合成 |
| 收稿时间： | 1993-11-27 |
Synthesis of New Liquid Crystal Polymers with T-Shaped Two-Dimensional Mesogenic Units |
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| LI Zi-Fa,CHEN Zhi-Jun,ZHANG Shu-Yuan,WANG Jing-Wu,ZHOU Qi-Feng.Synthesis of New Liquid Crystal Polymers with T-Shaped Two-Dimensional Mesogenic Units[J].Chemical Research In Chinese Universities,1994,15(11):1723-1726. | |
| Authors: | LI Zi-Fa CHEN Zhi-Jun ZHANG Shu-Yuan WANG Jing-Wu ZHOU Qi-Feng |
| Institution: | 1. Department of Material Engineering, Zhengzhou University, Zhengzhou, 450052; 2. Department of Chemistry, Peking University |
| Abstract: | Two new kinds of polymers were synthesized by low temperature solution polycondensation by using N-2, 5-dihydroxy benzylidene-4-substitued aniline and diacid chloride with different structures as the monomer. The liquid-crystalline behavior of the polymers was characterized by DSC, polarizing microscopy with a heatlng stage and X-ray diffractometer.It was found that one kind of the polymers was nematic thermotropic liquid crystal polymers, and the other kind of polymers was non-liquid-crystalline. The intrinsic viscosities, Tm and Ti of the polymers changed regularly with the change of the structure of the monomers. |
| Keywords: | Liquid crystalline polymer T-shped two-dimensional mesogens Synthesis of polymer |
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