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Cobalt‐Mediated Radical Polymerization of Vinyl Acetate in Miniemulsion: Very Fast Formation of Stable Poly(vinyl acetate) Latexes at Low Temperature
Author(s) -
Detrembleur Christophe,
Debuigne Antoine,
Bryaskova Rayna,
Charleux Bernadette,
Jérôme Robert
Publication year - 2006
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/marc.200500645
Subject(s) - vinyl acetate , miniemulsion , polymer chemistry , monomer , polymerization , radical polymerization , polyvinyl acetate , materials science , polymer , radical initiator , vinyl polymer , copolymer , chemistry , organic chemistry
Summary: Poly(vinyl acetate) macroinitiators end‐capped by a Co(acac) 2 complex (PVAc–Co(acac) 2 ), prepared in bulk by cobalt‐mediated radical polymerization (CMRP), are used for the controlled radical polymerization of vinyl acetate in miniemulsion to give high‐molecular‐weight polymers and high monomer conversion. Stable poly(vinyl acetate) latexes with solid contents ranging from 25 to 30 wt.‐% are prepared within unusually short reaction times (∼1 h) at low temperatures (0–30 °C).SEC chromatograms for the PVAc–Co(acac) 2 macroinitiator and PVAc latex obtained under ultrasonication for 6 min at 0 °C (79% monomer conversion).