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Synthesis of cis‐ 1,4‐polyisoprene with Al‐Ti catalysts modified by different electron donor reagent
Author(s) -
Wang Zhaowei,
Wen Zhixia,
Li Xing,
Yu Junwei,
Liu Xiaoxuan
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44357
Subject(s) - anisole , catalysis , ether , polymerization , reagent , polymer chemistry , chemistry , monomer , styrene , materials science , organic chemistry , polymer , copolymer
The preparation of the high cis −1,4‐polyisoprene by Ziegler‐Natta catalysis system was studied. The effect of Al‐Ti catalysts modified by ethers with different structures which are different electron donor reagent on polymerization of isoprene has been mainly investigated. By the measurement method of the monomer conversion, FTIR, and 1 H NMR spectroscopy, the influence of, respectively, added diphenyl ether, anisole, dibutyl ether, or methyl tert ‐butyl methyl ether as a third active component on the heterogeneous TiCl 4 ‐Al( i ‐Bu) 3 ‐ether catalyst activity and microstructure of synthetic polyisoprene was analyzed. By the adding of diphenyl ether or dibutyl ether, the process of prefabricated heterogeneous catalyst is quickly and catalyst particle quantity is large. The polymerization conversion is high and the microstructure cis −1,4 content of the resulting polymer can reach 92%. But Al( i ‐Bu) 3 added anisole or methyl tert ‐butyl methyl ether hard to cooperate with TiCl 4 . © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44357.