| PET／60PABA 热致型液晶共聚酯的合成与表征 |
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| 引用本文： | 胡兆麟,左志俊,倪寒秋.PET／60PABA 热致型液晶共聚酯的合成与表征[J].合成技术及应用,2013(4):10-13,30. |
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| 作者姓名： | 胡兆麟 左志俊 倪寒秋 |
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| 作者单位： | 中国石化仪征化纤股份有限公司研究院,江苏仪征,211900 |
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| 摘 要： | 将对羟基苯甲酸（PHB）的乙酰化产物对乙酰氧基苯甲酸（PABA）引入聚酯（PET）分子主链结构中，成功制备出共聚酯 PET /60PABA，研究了聚合温度和催化剂浓度对共聚酯合成的影响。通过差示扫描量热（DSC）、X 射线衍射（XRD）、超导核磁共振（NMR）、凝胶渗透色谱（GPC）、偏光显微镜（POM）和毛细管流变仪等手段对共聚酯的分子结构与液晶形态进行表征，结果表明，共聚酯 PET /60PABA 几乎为完全无规共聚，熔融状态下具有向列型热致液晶聚合物的典型特征。
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| 关 键 词： | 热致液晶 共聚酯 合成 表征 |
Synthesis and characterization of Thermotropic Liquid Crystalline Copolyesters PET/60PABA |
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| Hu Zhaolin,Zuo Zhijun,Ni Hanqiu.Synthesis and characterization of Thermotropic Liquid Crystalline Copolyesters PET/60PABA[J].Synthetic Technology and Application,2013(4):10-13,30. |
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| Authors: | Hu Zhaolin Zuo Zhijun Ni Hanqiu |
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| Affiliation: | Hu Zhaolin, Zuo Zhijun, Ni Hanqiu |
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| Abstract: | The thermotropic liquid crystalline copolyesters PET /60PABA were successfully perpared by intro-ducing P-hydroxybenzoic acid（PHB）units into the polyethylene terephthalate（PET）chain.The effects of ploymer-ization temperature and catalyst concentration on the copolyester synthesis were stuidied.The macromolecular struc-ture and the thermotropic liquid crystalline behavior of copolyesters were analyzed by DSC、XRD、NMR、GPC、POM and capillary rheometer.The results showed that PET /60PABA was a completely random copolymer,and it has a typical behavior of nematic thermotropic liquid crystalline in melt state. |
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| Keywords: | thermotropic liquid crystalline polymer copolyesters synthesis characterization |
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