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2007•Journal of Qingdao UniversityRequires access

Reversible Addition and Fragmentation Chain Transfer Free-radical Polymerization of Methyl Methacrylate and Synthesis of Derived Block Polymer

Yao Hong-wei

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Abstract

s,s'-bis(2-hydroxyethyl-2'-dimethylacrylate) trithiocarbonate was used as the chain transfer agent in reversible addition-fragmentation chain transfer(RAFT) polymerizations of methyl methacrylate.The polymerization showed living/controlled characteristics.Reaction kinetics was first order and linear.Relative molecular mass of polymer was controllable and increased linearly with monomer conversion.The polymer obtained was narrow in polydispersity index.The derived well-controlled block copolymer(PMMA-b-PBA) was prepared by using the above obtained polymer as macromolecular RAFT agent and BA as second monomer.

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What this paper is about

s,s'-bis(2-hydroxyethyl-2'-dimethylacrylate) trithiocarbonate was used as the chain transfer agent in reversible addition-fragmentation chain transfer(RAFT) polymerizations of methyl methacrylate.The polymerization showed living/controlled characteristics.Reaction kinetics was first order and linear.Relative molecular mass of polymer was controllable and increased linearly with monomer conversion.The polymer obtained was narrow in polydispersity index.The derived well-controlled block copolymer(PMMA-b-PBA) was prepared by using the above obtained polymer as macromolecular RAFT agent and BA as second monomer.

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Available abstract

s,s'-bis(2-hydroxyethyl-2'-dimethylacrylate) trithiocarbonate was used as the chain transfer agent in reversible addition-fragmentation chain transfer(RAFT) polymerizations of methyl methacrylate.The polymerization showed living/controlled characteristics.Reaction kinetics was first order and linear.Relative molecular mass of polymer was controllable and increased linearly with monomer conversion.The polymer obtained was narrow in polydispersity index.The derived well-controlled block copolymer(PMMA-b-PBA) was prepared by using the above obtained polymer as macromolecular RAFT agent and BA as second monomer.

Key concepts: Chain transfer, Reversible addition−fragmentation chain-transfer polymerization, Raft, Polymer chemistry, Dispersity, Copolymer, Living polymerization, Monomer

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