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Investigation of statistical, block and graft copolymerizations using nmr‐sensitive initiators and macroinitiators
Author(s) -
Harwood H. James,
Christov Latchezar,
Guo Mingming,
Holland Troy V.,
Huckstep April Y.,
Jones Daniel H.,
Medsker Robert E.,
Rinaldi Peter L.,
Saito Takeshi,
Tung Deborah S.
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961110105
Subject(s) - copolymer , radical , polymer chemistry , methyl methacrylate , ketone , polymer , solvent , molar mass distribution , chemistry , organic chemistry
13 C‐ and 31 P‐NMR studies on polymers and copolymers derived from 13 C‐enriched AIBN, 13 C‐enriched dibenzyl ketone and diphenyl‐2,4,6‐trimethylbenzoylphosphine oxide (Lucrin TPO) are reported. They provide information about the influence of solvent on the initiation step in copolymerization reactions, the selectivity of diphenylphosphinyl radicals and the chemical behavior of radicals derived from dibenzyl ketone. In addition, NMR, molecular weight and molecular weight distribution measurements on polymers obtained from polymerizations of methyl methacrylate conducted in the presence of stilbene indicate that stilbene or radicals derived from it may be able to moderate MMA polymerizations.