Premium
Organosilicon‐Assisted Transformation of Living Anionic into Living Cationic Polymerization
Author(s) -
Sanji Takanobu,
Sunaga Daisuke,
Muto Yasuhiro,
Sakurai Hideki
Publication year - 2003
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/marc.200390053
Subject(s) - cationic polymerization , living cationic polymerization , polymer chemistry , polymerization , copolymer , ionic polymerization , living anionic polymerization , anionic addition polymerization , living polymerization , organosilicon , vinyl ether , chemistry , end group , living free radical polymerization , organic chemistry , radical polymerization , polymer
A novel method is described for transforming an anionic polymerization process into a cationic polymerization process assisted by organosilyl groups. The reaction of the p ‐tolyldimethylsilyl end group of polystyrene and trifluoromethanesulfonic acid produced a silyl triflate end group that served as a macroinitiator for the living cationic polymerization of isobutyl vinyl ether. The SiO linkage in the block copolymers underwent specific cleavage by reaction with tetrabutylammonium fluoride.