| 在THF中用n—BuLi引发的异戊二烯阴离子聚合动力学研究 |
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| 引用本文： | 吴滨,程珏.在THF中用n—BuLi引发的异戊二烯阴离子聚合动力学研究[J].北京化工大学学报(自然科学版),1997,24(1):34-39. |
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| 作者姓名： | 吴滨 程珏 |
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| 作者单位： | 北京化工大学材料科学与工程学院!北京，100029，北京化工大学材料科学与工程学院!北京，100029，北京化工大学材料科学与工程学院!北京，100029 |
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| 摘 要： | 以ＴＨＦ为溶剂，ｎ－ＢｕＬｉ中引发剂，利用膨胀计对异戊二烯（Ｉｐ）阴离子聚合增长反应的动力学进行了研究，结果表明，增长反应速率与单体浓度及引发剂浓度均呈一级关系，其关系式可表示为：Ｒｐ＝ｋｐ（Ｉｐ）（ｎ－ＢｎＬｉ）并求得该体系链增长反应真实活化能Ｅａ和频率因子Ａ：Ｅａ＝３３．５４０ｋＪ／ｍｏｌ，Ａ＝３．９６１×１０＾４Ｌ／ｍｏｌ．ｈ因此，链增长反应速率常数可表示为ｋｐ＝３．９６１×１０＾４ｅｘｐ（
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| 关 键 词： | 阴离子聚合 动力学 四氢呋喃 异戊二烯 聚合 |
A Study on Kinetics of Anionic Polymerization of Isoprene in THF Using n-BuLi as Initiator |
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| Wu Bing, Cheng Jue, Jin Guantai.A Study on Kinetics of Anionic Polymerization of Isoprene in THF Using n-BuLi as Initiator[J].Journal of Beijing University of Chemical Technology,1997,24(1):34-39. |
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| Authors: | Wu Bing Cheng Jue Jin Guantai |
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| Abstract: | The kinetics of the anionic polymerization of isoprene initiated by n-BuLi was intetrahydrofuran(THF). The experiments were carried out using dilatometry. The propaga-tion reaction rate (Rp) was found to be first order with respect to both monomer andinitiator concentrations, thereby obtaining the following relationship:Moreover, the real activation energy and frequency fabtor for chain propagation inm-BuLi-Ip-THF system were found to be 33.540 kJ/mol and 3.96 x 104 L/mol. hrespectively. Therefore, the chain propagation rate constant is presented as follows: |
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| Keywords: | anionic polymerization kinetics tetrahydrofuran |
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