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A comparison of group transfer and anionic polymerization of acrylic monomers
Author(s) -
Webster Owen W.
Publication year - 1992
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19920600126
Subject(s) - polymerization , monomer , nucleophile , gtp' , polymer chemistry , anionic addition polymerization , chemistry , chain transfer , chain growth polymerization , ionic polymerization , polymer , catalysis , radical polymerization , organic chemistry , enzyme
The living polymerization of acrylic monomers by a repeated silyl Michael addition reaction (GTP) a operates at temperatures as high as 100° C. The resulting polymers are, however, nearly identical to those produced by anionic polymerization at low temperatures. Is GTP merely a special form of anionic polymerization? A proposal is made that GTP catalyzed by weak nucleophiles proceeds by insertion of monomer in silylated chain ends and that GTP catalyzed by strong nucleophiles proceeds by reversible generation of free enolate.