| SnLi引发苯乙烯/异戊二烯/丁二烯聚合动力学 |
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| 引用本文： | 徐一兵,梁汉东,王妮妮,徐林,于国柱,李伟. SnLi引发苯乙烯/异戊二烯/丁二烯聚合动力学[J]. 高分子材料科学与工程, 2009, 0(7) |
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| 作者姓名： | 徐一兵 梁汉东 王妮妮 徐林 于国柱 李伟 |
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| 作者单位： | 中国矿业大学(北京)资源与安全工程学院;中石化北京燕山分公司研究院; |
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| 基金项目： | 中国石油化工股份有限公司科研项目(405095) |
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| 摘 要： | 以含锡有机锂(SnLi)为引发剂,四氢呋喃(THF)为结构调节剂,环己烷为溶剂,对苯乙烯(St)、异戊二烯(Ip)和丁二烯(Bd)进行阴离子聚合,合成了锡官能化St-Ip-Bd三元共聚物(SIBR),研究了不同THF/SnLi(摩尔比)和引发温度下的聚合动力学。结果表明,在三元共聚合中,三种单体的反应速率与其各自浓度均符合一级动力学关系;随着引发温度的升高和THF/SnLi的增大,各单体的反应速率常数逐渐增大;当THF/SnLi为30时,单体BdI、p、St的表观增长反应活化能分别为68.486 kJ/mol,87.984 kJ/mol,76.351 kJ/mol,链增长频率因子分别为2.86×1010min-1,1.47×1013min-1,3.40×1011min-1。
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| 关 键 词： | 含锡有机锂引发剂 苯乙烯 异戊二烯 丁二烯 官能化集成橡胶 阴离子聚合 聚合动力学 |
Polymerization Kinetics Behavior of Butadiene/Isoprene/Styrene with Tin-Containing Organolithium as Initiator |
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| XU Yi-bing,LIANG Han-dong,WANG Ni-ni,XU Lin,YU Guo-zhu,LI Wei. Polymerization Kinetics Behavior of Butadiene/Isoprene/Styrene with Tin-Containing Organolithium as Initiator[J]. Polymer Materials Science & Engineering, 2009, 0(7) |
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| Authors: | XU Yi-bing LIANG Han-dong WANG Ni-ni XU Lin YU Guo-zhu LI Wei |
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| Affiliation: | XU Yi-bing1,2,LIANG Han-dong1,WANG Ni-ni2,XU Lin2,YU Guo-zhu2,LI Wei2(1.College of Resource and Safety Engineering,China University of Mining and Technology,Beijing 100083,China,2.Research Institute of Beijing Yanhua,SINOPEC,Beijing 102500,China) |
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| Abstract: | A novel tin-functionalized integrated rubber of butadiene-isoprene-styrene tri-copolymer(SIBR) for high performance tire tread was prepared with self-made tin-containing organolithium(SnLi) as initiator,cyclohexane as solvent and tetrahydrofuran(THF) as polar modifier.The effects of THF/SnLi(mole ratio) and initiation temperature on polymerization kinetics were investigated.The results show that polymerization rate is linear with relative monomer concentration.The reaction rate constant of each monomer incr... |
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| Keywords: | tin-containing organolithium initiator styrene isoprene butadiene tin-functionalized integrated rubber anionic polymerization polymerization kinetic |
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