| 以ET为柔性间隔基的嵌段热致液晶共聚酯的合成及表征 |
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| 引用本文： | 王久芬,姜丽萍,周海骏.以ET为柔性间隔基的嵌段热致液晶共聚酯的合成及表征[J].高分子材料科学与工程,2003,19(1):192-199,198. |
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| 作者姓名： | 王久芬 姜丽萍 周海骏 |
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| 作者单位： | 华北工学院化学工程系,山西,太原,030051 |
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| 基金项目： | 山西省自然科学基金资助项目 ( 2 0 0 110 17) |
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| 摘 要： | 用溶液缩聚法合成了含柔性间隔基的嵌段热致液共聚酯。由于在TCE／Py溶液中共聚酯溶解度较小及溶液中副反应显著，合成的嵌段共聚酯特性粘度都小于0．30dL/g，DTA和偏光显微镜对嵌段共聚酯的液晶性和相转变研究结果表明，所有嵌段共聚酯都为向列相热致液共聚酯。
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| 关 键 词： | ET 柔性间隔基 嵌段共聚酯 热致液晶高分子 合成 表征 |
| 文章编号： | 1000-7555(2003)01-0192-03 |
SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC LIQUID CRYSTALLINE BLOCK COPOLYESTER CONTAINING FLEXIBLE ETHYLENE TEREPHTHALATE SEGMENTS |
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| WANG Jiu-fen,JIANG Li-ping,ZHOU Hai-jun.SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC LIQUID CRYSTALLINE BLOCK COPOLYESTER CONTAINING FLEXIBLE ETHYLENE TEREPHTHALATE SEGMENTS[J].Polymer Materials Science & Engineering,2003,19(1):192-199,198. |
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| Authors: | WANG Jiu-fen JIANG Li-ping ZHOU Hai-jun |
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| Abstract: | The thermotropic liquid crystalline block copolyesters with flexible space group in main chain were synthesized via solution polycondensation. Inherent viscosities of the ET block copolymer were always lower than 0.30 dL/g. Formation of low molecular weight ET block copolymer was attributed to:(1)insolubility of the block copolymers in TCE/Py and (2)formation of side products. The block copolymer were characterized by DTA and polarizing optical microscopy. All copolymers exhibited a nematic liquid crystalline texture. |
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| Keywords: | block copolyester thermotropic liquid crystalline polymer synthesis and characterization |
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