Controlled, radical reversible addition-fragmentation chain-transfer polymerization in high-surfactant-concentration ionic miniemulsions
Date
2004
Authors
Mcleary J.B.
Tonge M.P.
De Wet Ross D.
Sanderson R.D.
Klumperman B.
Journal Title
Journal ISSN
Volume Title
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Abstract
Living free-radical polymerization of methacrylate and styrenic monomers with ionic surfactants was carried out with reversible addition-fragmentation chain transfer in miniemulsion with different surfactant types and concentrations. The previously reported problem of phase separation was found to be insignificant at higher surfactant concentrations, and control of the molar mass and polydispersity index was superior to that of published miniemulsion systems. Cationic and anionic surfactants were used to examine the validity of the argument that ionic surfactants interfere with transfer agents. Ionic surfactants were suitable for miniemulsion polymerization under certain conditions. The colloidal stability of the miniemulsions was consistent with the predictions of a specific model. The living character of the polymer that comprised the latex material was shown by its transformation into block copolymers. © 2004 Wiley Periodicals, Inc.
Description
Keywords
Addition reactions, Colloids, Emulsion polymerization, Emulsions, Free radical polymerization, Latexes, Living polymerization, Phase separation, Polyacrylates, Surface active agents, Addition fragmentation chain transfer, Ionic surfactants, Miniemulsions, Molar mass, Polydispersity index, Monomers, polymerization, surface-active agent
Citation
Journal of Polymer Science, Part A: Polymer Chemistry
42
4
42
4