Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Sensing characteristics of polyaniline sensor coated with porous PVDF layers to methanol gas under various humidity conditions

다공성 PVDF막이 코팅된 Polyaniline 센서의 다양한 습도분위기의 메탄올 가스에 대한 감응특성

  • Lim, Cheol-Beom (Department of Material Science Metallurgy, Kyungpook National University) ;
  • Sohn, Sung-Ok (Department of Material Science Metallurgy, Kyungpook National University) ;
  • Huh, Jeung-Soo (Department of Material Science Metallurgy, Kyungpook National University)
  • Published : 2006.05.31
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Abstract

Hydrophobic polymer [ex. Poly(vinylidenfluoride)] layer was coated on polyaniline (PANi) sensor to reduce the contamination humidity. The differences in sensitivity to methanol gas detection in various humidity condition between pure-PANi sensor and sensor coated with poly(vinylidenfluoride) polymer (PVDF) (coated-PANi sensor) were investigated. Considering the relation between the density of pore, which was coated on the layer of the PANi sensor, and sensitivity was investigated. To fabricate the porous PVDF layer on PANi sensor, poly(vinylalcohol) (PVA), which is water-soluble polymer, was used. Coated-PANi sensor was less affected by humidity compared with pure-PANi sensor. And higher density of pore on PVDF layer led to higher sensitivity.

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References

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