Thermal analysis and mechanical characterization of maleimide-functionalized benzoxazine/epoxy copolymers

Authors

  • Hatsuo Ishida,

    Corresponding author
    1. Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202
    • Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202
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  • Sharon Ohba

    1. Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202
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Abstract

Maleimide-functionalized benzoxazine is copolymerized with epoxy to improve toughness and processibility without compromising the thermal properties. The incorporation of maleimide functionality into the benzoxazine monomer results in a high performance polymer. All three possible polymerization reactions are confirmed using Fourier transform infrared (FT-IR) spectroscopy. While maleimide-functionalized benzoxazine has a glass transition temperature, Tg, of 252°C, a further 25°C increase of Tg is observed when copolymerized with epoxy. The flexural properties are also measured, and the copolymers exhibit a flexural modulus of 4.2–5.0 GPa. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1670–1677, 2006

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