以正丁基锂为引发剂、乙基四氢糠基醚(ETE)为调节剂、环己烷为溶剂,采用高温负离子聚合工艺合成了丁二烯(Bd)/苯乙烯(St)橡胶.研究了聚合温度、ETE/Li比和引发剂浓度等因素对聚合反应动力学的影响.结果表明,ETE是溶聚丁苯橡胶(SSBR)合成中有效的高温调节剂,在高温下仍然具有很好的活性,能够显著加快共聚合反应速率,调节单体Bd和St的聚合速率,同时对反应动力学参数进行了研究.
The butadiene/styrene rubber (SSBR) was synthesized with n-butyllithium as initiator,tetrahydrofufuryethylether(ETE)as polar modifier, eydohexane/hexane as solvent by the high temperature polymerization technology. The effect of polymerization temperature, ETE/Li molar ratio and initiator concentration on the copolymerization kinetics of styrene and butadiene was investigated. The results show that ETE is a very effective polar modifier for SSBR synthesis by using the high temperature polymerization technology, it displays nice activity under the high temperature. ETE obviously increases the rate of copolymerization and adjustes the rate of Bd and St polymerization. The polymerization kinetics parameters were analyzed and investigated also.
参考文献
| [1] | 俞可思,应圣康,俞槐根.丁二烯-苯乙烯阴离子共聚体系13C-NMR研究[J].高分子材料科学与工程,1987(05):14-19. |
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