| 脂肪族聚酯结晶特性与分子结构的关系 |
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| 引用本文： | 孙杰,郑敏侠,刘渝,刘晓峰,谭惠民.脂肪族聚酯结晶特性与分子结构的关系[J].高分子材料科学与工程,2011(6):68-71. |
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| 作者姓名： | 孙杰 郑敏侠 刘渝 刘晓峰 谭惠民 |
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| 作者单位： | 中国工程物理研究院化工材料研究所;北京理工大学材料科学与工程学院 |
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| 摘 要： | 用差示扫描量热法(DSC)和修正的Avrami方程研究了聚丁二酸乙二醇酯(PES)、聚丁二酸丁二醇酯(PBS)、聚丁二酸己二醇酯(PHS)、聚己二酸己二醇酯(PHA)和聚癸二酸己二醇酯(PHSe)的非等温结晶动力学,得到了脂肪族聚酯的Avrami指数、结晶速率常数、结晶活化能和过冷度等结晶动力学参数.结果表明,脂肪族聚...
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| 关 键 词： | 脂肪族聚酯 结晶动力学 生物降解 |
The Relationship Between Molecular Structure and Crystallization Behavior of Aliphatic Polyesters |
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| Jie Sun,Minxia Zheng,Yu Liu,Xiaofeng Liu,Huimin Tan.The Relationship Between Molecular Structure and Crystallization Behavior of Aliphatic Polyesters[J].Polymer Materials Science & Engineering,2011(6):68-71. |
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| Authors: | Jie Sun Minxia Zheng Yu Liu Xiaofeng Liu Huimin Tan |
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| Affiliation: | 1.Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,China; 2.Department of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | The nonisothermal crystallization kinetics of aliphatic polyesters such as polyethylene-succinate(PES), polybutylene-succinate(PBS),polyhexylene-succinate(PHS),polyhexylene-adipate(PHA) and polyhexylenesebacate (PHSe) was investigaed by differential scanning calorimetry(DSC).And the data were treated with Avrami equation.The Avrami exponent(n),crystallization rate parameter(Z_c),crystallization activation energy(E_c) and supercooling degree(△T) of aliphatic polyesters were obtained.The results show that the crystallization behavior of aliphatic polyesters strongly depends on the content of ester group.The supercooling degree decreases and the crystallization rate increases when the ester group content increases.The rigidity of ester groups reduces the flexibility and crystallinity of aliphatic polyesters,and also influences the crystallization mechanism. |
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| Keywords: | aliphatic polyester crystallization kinetics biodegradation |
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