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Syndiospecific copolymerization of styrene with styrene terminated isoprene macromonomer by CpTiCl 3 ‐methylaluminoxane catalyst
Author(s) -
Endo Kiyoshi,
Senoo Kazunobu
Publication year - 1998
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19981101)19:11<563::aid-marc563>3.0.co;2-8
Subject(s) - methylaluminoxane , macromonomer , copolymer , styrene , polymer chemistry , polystyrene , materials science , chemistry , organic chemistry , metallocene , polymer , polymerization
Copolymerization of styrene with styrene terminated polyisoprene macromonomer (SIPM) by CpTiCl 3 ‐methylaluminoxane (MAO) catalyst has been investigated (Cp: cyclopentadienyl). SIPM was prepared by reaction of living polyisoprene initiated with sec ‐butyllithium (s‐BuLi) and p ‐chloromethylstyrene. The synthesized macromonomer has a high terminal degree of functionalization and a narrow molecular weight distribution. Graft copolymers of polystyrene‐ graft ‐polyisoprene have been synthesized with the CpTiCl 3 ‐MAO catalyst. The synthesized graft copolymer was confirmed to have a highly syndiotactic sequence on the main chain.