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Synthesis of polystyrene-graft-poly(p-benzamide) by chain-growth condensation polymerization and radical polymerization: Improvement of thermal properties of polystyrene

Authors

  • Yoshihiro Ohta,

    1. Department of Material and Life Chemistry, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
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  • Tadahiko Shirakura,

    1. Department of Material and Life Chemistry, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
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  • Akihiro Yokoyama,

    1. Department of Material and Life Chemistry, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
    Current affiliation:
    1. Akihiro Yokoyama, Department of Material and Life Science, Seikei University, Kichijoji-Kitamachi, Musashino-shi, Tokyo 180-8633, Japan
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  • Tsutomu Yokozawa

    Corresponding author
    1. Department of Material and Life Chemistry, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
    • Department of Material and Life Chemistry, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
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Abstract

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Polystyrene-graft-poly(p-benzamide) was synthesized by free radical copolymerization of poly(N-octyloxybenzyl-p-benzamide) macromonomer and styrene, followed by the removal of the octyloxybenzyl groups from amide nitrogen. The glass transition temperature (Tg) of polystyrene-graft-poly(p-benzamide) increased dramatically by 50–60 °C when the content of poly(p-benzamide) exceeded a threshold of about 4%.

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