| 硫酸钙催化环氧乙烷的聚合反应 |
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| 引用本文： | 程广文,范晓东,刘国涛,周志勇. 硫酸钙催化环氧乙烷的聚合反应[J]. 高分子材料科学与工程, 2009, 0(3): 5-8 |
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| 作者姓名： | 程广文 范晓东 刘国涛 周志勇 |
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| 作者单位： | 西北工业大学应用化学系; |
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| 基金项目： | 国防科工委‘十一五’计量重点项目(J142006A201) |
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| 摘 要： | 用硫酸钙催化环氧乙烷聚合得到了一种中高分子量的聚乙二醇。用红外、核磁等仪器对产物进行了表征。通过测定反应体系压降速率定性描述了聚合速率,研究发现,聚合速率与单体浓度呈二次关系,与催化剂用量呈一次关系;该反应具有准活性聚合特点。
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| 关 键 词： | 环氧乙烷 硫酸钙 聚合速率 聚乙二醇 |
Polymerization of Ethylene Oxide Catalyzed by Calcium Sulphate |
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| CHENG Guang-wen,FAN Xiao-dong,LIU Guo-tao,ZHOU Zhi-yong. Polymerization of Ethylene Oxide Catalyzed by Calcium Sulphate[J]. Polymer Materials Science & Engineering, 2009, 0(3): 5-8 |
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| Authors: | CHENG Guang-wen FAN Xiao-dong LIU Guo-tao ZHOU Zhi-yong |
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| Affiliation: | Department of Applied Chemistry;School of Science;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | A poly(ethylene glycol) with medium-high molecular weight was synthesized by polymerization of ethylene oxide in the presence of calcium sulphate as a catalyst.The polymer obtained were characterized by IR,1H-NMR and other instruments.The kinetic of polymerization was studied through the measurements of reaction rate in accordance with the dropping pressure.The results show that the reaction rate is proportional to the amount of catalyst used and the square of monomer concentration.The reaction is quasi-liv... |
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| Keywords: | ethylene oxide calcium sulphate polymerization rate poly(ethylene glycol) |
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