Fe-mediated SET-LRP of MMA and St in the presence of air

Authors

  • Guoxiang Wang,

    Corresponding author
    1. College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan Province, China
    • College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan Province, China.
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  • Mang Lu

    1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi Province, China
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Abstract

In this work, well-defined homopolymers of methyl methacrylate (PMMA) and styrene (PSt) were prepared via single-electron-transfer living radical polymerization using CCl4 as initiator and Fe(0)/N, N, N′,N′-tetramethyl-1,2-ethanediamine as catalyst. The polymerization was conducted at 25 °C in N,N-dimethylformamide in the presence of air. It proceeded in a ‘living’ manner, as indicated by the first-order kinetics behavior, and the linear increase of the number-average molecular weight (Mn, GPC) with conversion was close to the theoretical Mn, theory. Solvent and additives have a profound effect on the polymerization. In addition, the PMMA and PSt obtained remained of low dispersity. The chain-end functionality of the obtained homopolymer of PMMA was characterized by proton nuclear magnetic resonance. A block copolymer of P(MMA-block-St) was achieved by using the obtained PMMA as macroinitiator. The living characteristics were further demonstrated by chain extension experiments. Copyright © 2012 Society of Chemical Industry

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