Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on the Preparation of NBR/Polypyrrole Conducting Composites and Their Electrical Properties

Poly(acrylonitrile-co-butadiene) Rubber/Polypyrrole 전도성 복합체의 제조와 전기적 성질에 관한 연구

  • Jung, Mi-Ok (Faculty of Applied Chemistry, College of Engineering, Chonnam National University) ;
  • Huh, Yong-Il (Faculty of Applied Chemistry, College of Engineering, Chonnam National University) ;
  • Lee, Wan-Jin (Faculty of Applied Chemistry, College of Engineering, Chonnam National University)
  • 정미옥 (전남대학교 공과대학 응용화학부) ;
  • 허양일 (전남대학교 공과대학 응용화학부) ;
  • 이완진 (전남대학교 공과대학 응용화학부)
  • Published : 2000.09.30
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Abstract

The conducting composites were prepared by emulsion polymerization with poly (acrylonitrile-co-butadiene) (NBR) as a matrix and polypyrrole (PPY) as a conducting polymer. Among several surfactants, the electrical conductivity of the composite which was polymerized by dodecyl sodium sulfate (DSS) was the best. The film of composite was prepared by compression molding. The electrical conductivity was measured by 4 probes method as a function of PPY and temperature. When the content of PPY was 25 wt%, the electrical conductivity of composite was increased up to 1.17 S/cm. The percolation threshold showed at the vicinity of 15 wt% PPY content.

Host Polymer인 Poly(acrylonitrile-co-butadiene) (NBR)과 전도성 고분자인 Polypyrrole (PPY)과의 복합체를 유화 중합법으로 제조하였다. 여러 가지의 유화제 중에서 dodecyl sodium sulfate (DSS)를 사용하여 중합하였을 때 복합체의 전기전도도가 가장 높게 나타났다. 복합체 필름은 압축성형법으로 제조되었으며 복합체의 전기전도도는 전도성고분자의 함량과 온도에 따라 4단자법으로 측정되었다. 제조된 복합체의 전기전도도는 PPY 함량이 25wt%일 때 1.17S/cm까지 증가되었으며 percolation threshold는 PPY의 함량 l5wt% 근처에서 나타났다.

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