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ESR Detection of Propagating Radical Species during RAFT‐Mediated Polymerization
Author(s) -
Tonge Matthew P.,
Calitz F. Malan,
Sanderson Ronald D.
Publication year - 2006
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/macp.200600337
Subject(s) - radical , raft , polymerization , radical polymerization , reversible addition−fragmentation chain transfer polymerization , polymer chemistry , chemistry , styrene , initialization , acrylate , photochemistry , methyl acrylate , polymer , organic chemistry , copolymer , computer science , programming language
Summary: ESR spectroscopy directly detected both propagating and intermediate radicals during RAFT‐mediated reactions of styrene and methyl acrylate. Their nature and concentrations during the initialization period were significantly different from those thereafter. The dominant radicals during the initialization period were initiator‐ and R‐group derived, and the intermediate radicals were both different and of lower concentration than during the subsequent steady state polymerization.