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RATRP/RAFT Polymerization

Xiangcai Ge

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Abstract

The mixed polymerization system of reverse atom transfer radical polymerization(RATRP)and reversible addition fragmentation chain transfer polymerization(RAFT)was investigated using CPDN as chain transfer agent,AIBN as initiator,CuCl2·2H2O as catalyzer and byp as ligand,resulting a series of dithioester-terminated and chloro-terminated PMMA homopolymer.1H-NMR and GPC measurements indicate that the polymerization system of one pot and two step method has the character of living/controlled radical polymerization.The PDI of the polymer obtained from two step method is wider than that of one pot at initial stage.In both cases a short inhibition time was observed.Two polymerization mechanism reacted together leading to the mixed polymerization system has the character of living/controlled radical polymerization.

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What this paper is about

The mixed polymerization system of reverse atom transfer radical polymerization(RATRP)and reversible addition fragmentation chain transfer polymerization(RAFT)was investigated using CPDN as chain transfer agent,AIBN as initiator,CuCl2·2H2O as catalyzer and byp as ligand,resulting a series of dithioester-terminated and chloro-terminated PMMA homopolymer.1H-NMR and GPC measurements indicate that the polymerization system of one pot and two step method has the character of living/controlled radical polymerization.The PDI of the polymer obtained from two step method is wider than that of one pot at initial stage.In both cases a short inhibition time was observed.Two polymerization mechanism reacted together leading to the mixed polymerization system has the character of living/controlled radical polymerization.

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Available abstract

The mixed polymerization system of reverse atom transfer radical polymerization(RATRP)and reversible addition fragmentation chain transfer polymerization(RAFT)was investigated using CPDN as chain transfer agent,AIBN as initiator,CuCl2·2H2O as catalyzer and byp as ligand,resulting a series of dithioester-terminated and chloro-terminated PMMA homopolymer.1H-NMR and GPC measurements indicate that the polymerization system of one pot and two step method has the character of living/controlled radical polymerization.The PDI of the polymer obtained from two step method is wider than that of one pot at initial stage.In both cases a short inhibition time was observed.Two polymerization mechanism reacted together leading to the mixed polymerization system has the character of living/controlled radical polymerization.

Key concepts: Chain transfer, Reversible addition−fragmentation chain-transfer polymerization, Polymerization, Living free-radical polymerization, Radical polymerization, Living polymerization, Ionic polymerization, Raft

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