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Atom transfer radical polymerization in the presence of a thiol: more evidence supporting radical intermediates
Author(s) -
Heuts Johan P. A.,
Mallesch Richard,
Davis Thomas P.
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19990601)200:6<1380::aid-macp1380>3.0.co;2-o
Subject(s) - chain transfer , chemistry , living free radical polymerization , radical polymerization , atom transfer radical polymerization , cobalt mediated radical polymerization , reversible addition−fragmentation chain transfer polymerization , polymerization , polymer chemistry , living polymerization , kinetic chain length , nitroxide mediated radical polymerization , dispersity , catalytic chain transfer , methyl methacrylate , transfer agent , photochemistry , ionic polymerization , polymer , organic chemistry
Octanethiol, a free‐radical chain transfer agent, was added to the atom transfer radical polymerization of methyl methacrylate. The molecular weight and polydispersity data of the polymers produced were consistent with the known chain transfer behaviour of octanethiol in conventional free‐radical polymerization. These results, which clearly indicate a radical nature of the propagating species, can be explained by a simple kinetic model, which describes an otherwise "living" polymerization system in the presence of an added chain transfer agent.