| 不同分子量聚丙撑碳酸酯的封端及热分解 |
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| 引用本文： | 谢东,张超灿,王献红,赵晓江,王佛松. 不同分子量聚丙撑碳酸酯的封端及热分解[J]. 武汉理工大学学报, 2007, 29(8): 5-9 |
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| 作者姓名： | 谢东 张超灿 王献红 赵晓江 王佛松 |
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| 作者单位： | 1. 武汉理工大学材料科学与工程学院,武汉,430070
2. 中国科学院长春应用化学研究所,长春,130022 |
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| 基金项目： | 中国科学院知识创新工程项目;国家自然科学基金 |
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| 摘 要： | 采用不同封端剂对聚丙撑碳酸酯(PPC)进行了封端,并研究了封端前后PPC的热降解动力学。结果表明封端极大地提高了PPC的热降解温度,未封端PPC同时按多种机制进行热降解,而封端PPC在整个降解过程中只按无规断链机制降解。不同分子量的PPC的热重结果表明未封端PPC的起始降解温度随着分子量的提高而提高,而封端PPC的热降解温度与分子量的关系不大。
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| 关 键 词： | 聚丙撑碳酸酯 封端 热分解动力学 |
| 文章编号： | 1671-4431（2007）08-0005-05 |
| 修稿时间： | 2007-02-02 |
End-capping and Thermal Degradation of Poly(propylene carbonate) with Different Molecular Weight |
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| XIE Dong,ZHANG Chao-can,WANG Xian-hong,ZHAO Xiao-jiang,WANG Fo-song. End-capping and Thermal Degradation of Poly(propylene carbonate) with Different Molecular Weight[J]. Journal of Wuhan University of Technology, 2007, 29(8): 5-9 |
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| Authors: | XIE Dong ZHANG Chao-can WANG Xian-hong ZHAO Xiao-jiang WANG Fo-song |
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| Affiliation: | 1. School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; 2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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| Abstract: | Various active agents were used for the end-capping of poly(propylene carbonate)(PPC),and the kinetic of thermal degradation of uncapped and end-capped PPC were investigated.The results showed that end-capping increases the thermal degradation temperature of PPC greatly,and different mechanisms operate simultaneously during the whole process for uncapped PPC,while for PPC end-capped with different active agents,random chain scission dominated the whole degradation process.Thermogravimetric results of PPC with different molecular weight showed that for uncapped PPC the initial degradation temperature increased with the molecular weight,while the degradation temperature doesn't relate to molecular weight for end-capped PPC. |
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| Keywords: | poly(propylene carbonate) end-capping thermal degradation kinetic |
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