Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effect of Humidity and Operating Temperature of Polymer Sensor to Methanol Gas

Methanol 가스에 대한 고분자 센서의 온도와 습도 영향 고찰

  • Lee, K.M. (Department of Materials Science and Metallurgy Kyungpook National University) ;
  • Hoh, Y.S. (Department of Materials Science and Metallurgy Kyungpook National University) ;
  • Jun, H.K. (Department of Materials Science and Metallurgy Kyungpook National University) ;
  • Sohn, S.O. (Department of Materials Science and Metallurgy Kyungpook National University) ;
  • Huh, J.S. (Department of Materials Science and Metallurgy Kyungpook National University)
  • Published : 2003.12.01
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Abstract

The polypyrrole prepared with pyrrole monomer, APS and DBSA was synthesized by chemical Polymerization at $V^{\circ}C$ under atmosphere conditions. After dissolving polypyrrole powder to the chloroform including DBSA, polypyrrole film was prepared on the alumina substrate with an interdigitated electrode by using the dip-coating method. This film was soaked in methanol solvent for 1 h at room temperature and heated to $70^{\circ}C$ for 4 h in $N_2$. Initial resistance was increased with the increasing humidity and decreasing temperature. The sensitivity was increased with lower humidity and decreasing temperature. The best linearity was achieved at $25^{\circ}C$ and low humidity of 0%.

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