| SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC COPOLYESTERS AND COPOLY (ESTER-AMIDE)S CONTAINING OXYETHYLENE-ETHER AS THE SPACER |
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| 作者姓名： | 王尚尔 莫志深 张宏放 冯之榴 |
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| 作者单位： | Polymer Physics Laboratory，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Polymer Physics Laboratory，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Polymer Physics Laboratory，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Polymer Physics Laboratory，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China and the National Key Projects for Fundamental Research“Macromolecular Condensed State”,The State Science and Technology Commission of China. |
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| 摘 要： | Flexible oxyethylene-ether was introduced into the aromatic copolyesters and copoly(es-ter-amide)s to reduce the melting point of resulting polymers. The melting point was greatlyreduced to 200℃ or even lower in some cases, and the molecular weight was satisfactorilyhigh as reflected by inherent viscosity. The polymers exhibited high thermal stability and goodmechanical properties as determined by TGA and mechanical tests. The copolyester showedbetter crystallinity and liquid crystallinity than corresponding copoly(ester-amide)s with simi-lar monomer composition as reflected by POM observation and WAXD study. The meltingpoints for both copolyesters and copoly (ester-amide)s showed great dependence on the p-acetoxybenzoic acid (PAB) content in monomer composition and reached the lowest valuewhen PAB was 29 mol%.
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| 收稿时间： | 1994-08-24 |
SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC COPOLYESTERS AND COPOLY (ESTER-AMIDE)S CONTAINING OXYETHYLENE-ETHER AS THE SPACER* |
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| WANG Shanger,MO Zhishen,ZHANG Hongfang,FENG Zhiliu.SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC COPOLYESTERS AND COPOLY (ESTER-AMIDE)S CONTAINING OXYETHYLENE-ETHER AS THE SPACER[J].Chinese Journal of Polymer Science,1995,0(4):353-360. |
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| Authors: | WANG Shanger MO Zhishen ZHANG Hongfang FENG Zhiliu |
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| Institution: | WANG Shanger;MO Zhishen;ZHANG Hongfang;FENG Zhiliu |
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| Abstract: | Flexible oxyethylene-ether was introduced into the aromatic copolyesters and copoly(es-ter-amide)s to reduce the melting point of resulting polymers. The melting point was greatlyreduced to 200℃ or even lower in some cases, and the molecular weight was satisfactorilyhigh as reflected by inherent viscosity. The polymers exhibited high thermal stability and goodmechanical properties as determined by TGA and mechanical tests. The copolyester showedbetter crystallinity and liquid crystallinity than corresponding copoly(ester-amide)s with similar monomer composition as reflected by POM observation and WAXD study.The melting points for both copolyesters and copoly(seter-amide)s showed great dependence on the pacetoxybenzoic acid(PAB) content in monomer composition and reached the lowest value when PAB was 29 mol%. |
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| Keywords: | Synthesis and comparison Liquid crystalline polymer Copolyester Copoly (ester-amide) |
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