文献类型：期刊文献

英文题名：A Complexed Initiating System AlCl3?Phenetole/TiCl4?H2O with Dominant Synergistic Effect for Efficient Synthesis of High Molecular Weight Polyisobutylene

作者：Jin, Yulong[1];Chen, Liang[2];Guo, Xing[2];Xu, Linfeng[2];Zhu, Zhihua[2];Liu, Zhen[2];Cheng, Ruihua[2];Liu, Boping[1]

机构：[1]South China Agr Univ, Coll Mat & Energy, Wushan Rd 483, Guangzhou 510630, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2019

卷号：11

期号：12

外文期刊名：POLYMERS

收录：;EI(收录号：20200708156586);WOS:【SCI-EXPANDED(收录号:WOS:000507624500214)】；

基金：This research was funded byWanhua Chemical (Project No: A100-81404).

语种：英文

外文关键词：cationic polymerization; isobutylene; complexed catalyst; high molecular weight; synergistic effect

摘要：A complexed initiating system AlCl(3)phenetole/TiCl4H2O was prepared by simply compounding AlCl3/phenetole and TiCl4/H2O and used for cationic polymerization of isobutylene. It was found AlCl(3)phenetole/TiCl4H2O exhibited activities 1.2-3 times higher than those of AlCl3/phenetole, and more than an order of magnitude higher than those of TiCl4/H2O, which indicated a notable synergistic effect produced in the complexed system. In addition, due to the higher activity of AlCl(3)phenetole/TiCl4H2O, lower coinitiator concentration and polymerization temperature, as well as higher monomer concentration were more favored for this complexed initiating system to produce polyisobutylene (PIB) with reasonable molecular weight (M-w) and molecular weight distribution (MWD). Furthermore, high molecular weight polyisobutylene (HPIB) with M-w = 1-3 x 10(5) gmol(-1) could be successfully produced by the complexed catalyst system at T-p = -60 to -40 degrees C. As a whole, the high activity as well as the simple preparation procedures of the complexed initiating system offer us a unique approach for the production of HPIB with improved efficiency.