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Nitroxide-Mediated Radical Polymerization of N-tert-Butylacrylamide

Authors

  • Orla Gibbons,

    1. School of Chemistry, National University of Ireland, Galway, Ireland
    2. National Centre for Biomedical Engineering Science (NCBES), National University of Ireland, Galway, Ireland
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  • William M. Carroll,

    1. School of Chemistry, National University of Ireland, Galway, Ireland
    2. National Centre for Biomedical Engineering Science (NCBES), National University of Ireland, Galway, Ireland
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  • Fawaz Aldabbagh,

    Corresponding author
    1. School of Chemistry, National University of Ireland, Galway, Ireland
    • School of Chemistry, National University of Ireland, Galway, Ireland. Fax: +353 9152 5700
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  • Per B. Zetterlund,

    Corresponding author
    1. Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan
    • Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan.
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  • Bunichiro Yamada

    1. School of Chemistry, National University of Ireland, Galway, Ireland
    2. National Centre for Biomedical Engineering Science (NCBES), National University of Ireland, Galway, Ireland
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Abstract

The nitroxide-mediated polymerization of N-tert-butylacrylamide (TBAM) in DMF at 120 °C using SG1/DEPN and AIBN has been investigated. Linear growth in number-average molecular weight (equation image) versus conversion and narrow molecular weight distributions (MWDs) with high livingness were obtained up to ≈8 000 g · mol−1. For higher molecular weights, the MWDs gradually became broader with low molecular weight tailing, and equation image deviated downwards from theoretical values. Quantitative analyses of MWDs, along with specifically designed conventional radical polymerizations at 120 °C, were consistent with chain transfer to monomer limiting the attainable equation image. This finding can be equally applied to existing literature polymerizations of TBAM.

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