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Use of a trichloromethyl‐terminated azo initiator to synthesize block copolymers by consecutive conventional radical polymerization and ATRP
Author(s) -
Destarac Mathias,
Boutevin Bernard
Publication year - 1999
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(19991201)20:12<641::aid-marc641>3.0.co;2-6
Subject(s) - copolymer , polymer chemistry , atom transfer radical polymerization , monomer , living free radical polymerization , styrene , radical polymerization , reversible addition−fragmentation chain transfer polymerization , polymerization , acrylate , polymer , catalytic chain transfer , radical initiator , chemistry , cobalt mediated radical polymerization , materials science , organic chemistry
A new two‐step procedure for the preparation of block copolymers by a free radical process is proposed. A trichloromethyl‐terminated azo initiator is synthesized and subsequently used to polymerize a first monomer, leading to a trichloromethyl‐functionalized polymer. Secondly, the preformed polymer is used as a macroinitiator to initiate the atom transfer radical polymerization (ATRP) of a second monomer, to generate a block copolymer. The principle of this method is illustrated with butyl acrylate as the first monomer, and styrene for the ATRP step.