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Reversible Addition-Fragmentation Chain Transfer (RAFT) Bulk Polymerization of Styrene: Effect of R-Group Structures of Carboxyl Acid Group Functionalized RAFT Agents  

Lee Jung Min (Department of Chemical Engineering, Inha University)
Kim Ok Hyung (Department of Chemical Engineering, Inha University)
Shim Sang Eun (Department of Chemical Engineering, Inha University)
Lee Byung H. (Department of Chemical Engineering, Inha University)
Choe Soonja (Department of Chemical Engineering, Inha University)
Publication Information
Macromolecular Research / v.13, no.3, 2005 , pp. 236-242 More about this Journal
Abstract
Three dithioester-derived carboxyl acid functionalized RAFT(reversible addition-fragmentation chain transfer) agents, viz. acetic acid dithiobenzoate, butanoic acid dithiobenzoate and 4-toluic acid dithiobenzoate, were used in the RAFT bulk polymerization of styrene, in order to study the effects of the R-group structure on the living nature of the polymerization. By conducting the polymerization with various concentrations of the RAFT agents and at different temperatures, it was found that the R-group structure of the RAFT agents plays an important role in the RAFT polymerization; the bulky structure and radical stabilizing property of the R-group enhances the living nature of the polymerization and allows the polymerization characteristics to be well controlled.
Keywords
RAFT agent; bulk polymerization; styrene; living radical polymerization;
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