Synthesis of poly(m-phenyleneisophthalamide) by solid-state polycondensation of isophthalic acid with m-phenylenediamine

Authors

  • Cenyao Zhang,

    1. Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H120, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
    Search for more papers by this author
  • Yu Shoji,

    1. Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H120, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
    Search for more papers by this author
  • Tomoya Higashihara,

    1. Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H120, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
    Search for more papers by this author
  • Akimitsu Tsukuda,

    1. Films & Film Products Research Laboratories, Toray Industries, Inc., 1-1-1, Sonoyama, Otsu, Shiga 520-8558, Japan
    Search for more papers by this author
  • Takashi Ochi,

    1. Technology Center, Toray Industries, Inc., 1-1-1, Sonoyama, Otsu, Shiga 520-8558, Japan
    Search for more papers by this author
  • Mitsuru Ueda

    Corresponding author
    1. Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H120, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
    • Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H120, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
    Search for more papers by this author

Abstract

original image

The synthesis of poly(m-phenyleneisophthalamide) was performed by thermal solid-phase polymerization from isophthalic acid and m-phenylenediamine without using any solvents or condensation agents. The two-stage heating process was conducted. The oligo(m-phenyleneisophthalamide) was first synthesized at a relatively low temperature (260 °C for 1 h), followed by the polycondensation at 400 °C for 1 min under reduced pressure to produce the aramid with an inherent viscosity of 0.55 dL/g.

Ancillary