Electrical Conduction near Percolation Threshold in Polymer Composite Containing Conducting Polypyrrole-Coated Insulating Polymer Fiber

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著者

    • Yin Xiao Hong Yin Xiao
    • Department of Electronic Engineering, Faculty of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565, Japan
    • Watanuki Toshiro
    • Central Research Laboratory, Japan Carlit Co., Ltd., 2470 Honda, Shibukawa, Gunma 377, Japan
    • Isa Isao
    • Central Research Laboratory, Japan Carlit Co., Ltd., 2470 Honda, Shibukawa, Gunma 377, Japan
    • Nakagawa Shinichi
    • Technical Research Center, The Kansai Electric Power Co., Inc., 3 Nakoji, Amagasaki, Hyogo 661, Japan
    • Adachi Mikio
    • Technical Research Center, The Kansai Electric Power Co., Inc., 3 Nakoji, Amagasaki, Hyogo 661, Japan

抄録

New types of conductor-insulator composites are prepared, in which conducting polymer-coated insulating polymers (polyethylene in spheres, nylon66 in fibers), whose size and shape are well controlled, are used as the conductor, and noncoated polyethylene spheres are used as the insulator. The dependence of electrical conductivity on the concentration of coated insulating polymers near the percolation threshold is studied in detail. The percolation threshold decreased with increasing length of coated nylon66 fibers. In the composite made of polypyrrole-coated polyethylene spheres and noncoated polyethylene spheres, the critical exponent t is evaluated to be 2.0±0.2. In the composite made of polypyrrole-coated nylon fibers (400 µ m, 800 µ m) and noncoated polyethylene spheres, a larger value t (3.0±0.4) is obtained. The dependence of t on applied voltage is also studied. In the composites made of polypyrrole-coated nylon66 fibers, t increases with increasing applied voltage. This can be explained by taking interparticle tunneling conduction into consideration in the percolation model.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes  

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 35(9A), 4692-4695, 1996-09-15 

    Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyo

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各種コード

  • NII論文ID(NAID)
    10004613149
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    4060149
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  JSAP 
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