| 羧基遥爪热致性主链液晶离聚物的合成与表征 |
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| 引用本文： | 黎前跃,钟启智,张翀,张宝砚.羧基遥爪热致性主链液晶离聚物的合成与表征[J].高分子材料科学与工程,2007,23(6):81-84. |
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| 作者姓名： | 黎前跃 钟启智 张翀 张宝砚 |
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| 作者单位： | 东北大学理学院,辽宁沈阳110004;沈阳化工学院材料科学与工程学院,辽宁沈阳110142;沈阳化工学院材料科学与工程学院,辽宁沈阳,110142;东北大学理学院,辽宁沈阳,110004 |
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| 基金项目： | 国家自然科学基金资助项目(20374009) |
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| 摘 要： | 以对羟基苯甲酸甲酯和1,4-丁二醇为主要原料,经熔融酯交换合成介晶基元双(对羟基苯甲酸)丁二醇酯(BBHB);以四氯乙烷为溶剂,采用溶液缩聚法将BBHB与适量的对苯二甲酰氯(TPC)反应,经Na2CO3溶液处理,合成端基为羧基的液晶离聚物。通过红外光谱等分析对它们的化学结构进行了表征。表明:所合成的液晶离聚物P1~P3为纹影织构,属于典型的向列型液晶,液晶相区间为100℃左右,羧基对液晶区间和玻璃化转变温度(Tg)、熔融温度(Tm)、相转变温度(Tc)影响不大。
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| 关 键 词： | 遥爪 主链 液晶离聚物 向列型 溶液缩聚 |
| 文章编号： | 1000-7555（2007）06-0081-04 |
| 修稿时间： | 2007-01-30 |
Synthesis of Thermotropic Main-Chain Liquid Crystalline Ionomer Containing Telechelic Groups |
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| LI Qian-yue,ZHONG Qi-zhi,ZHANG Chong,ZHANG Bao-yan.Synthesis of Thermotropic Main-Chain Liquid Crystalline Ionomer Containing Telechelic Groups[J].Polymer Materials Science & Engineering,2007,23(6):81-84. |
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| Authors: | LI Qian-yue ZHONG Qi-zhi ZHANG Chong ZHANG Bao-yan |
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| Affiliation: | 1. School of Science, Northeastern University, Shenyang 110004, China ; 2. School of Materials Science and Engineering, Shenyang Institute of Chemical Technology, Shengyang 110142, China |
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| Abstract: | Bis(p-hydroxybenzonic acid) butanediolate(BBHB)as mesogenic unit was prepared with methyl-p-hydroxybenzoate,1,4-butanediol and catalyzer by melting transesterification.Then liquid crystalline polymer was synthesized with excessive terephthaloyl chloride and BBHB by solution polycodensation,using tetrachloroethane as solvent.Thermotropic main-chain liquid crystalline polymer was synthesized.This liquid crystalline polymer was characterized by means of FT-IR.Photographs of polarizing microscope show that this liquid crystalline polymer is nematic liquid crystalline polymer.The chemical structure,thermal properties and liquid crystalline character of polymers P1~P3 were analyzed with IR,POM,DSC and WAXD,the final result shows the polymers P1~P3 are kinds of nematic liquid crystals,able to keep the state of liquid crystal properties unless reach to each decomposed temperatures. |
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| Keywords: | telechelic groups main chain liquid crystalline ionomers nematic solution polycondensation |
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