• Title/Summary/Keyword: chemical structure

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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;Kim Ok Hyung;Shim Sang Eun;Lee Byung H.;Choe Soonja
    • Macromolecular Research
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    • v.13 no.3
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    • pp.236-242
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    • 2005

  • 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.

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