Macromolecular Research

, Volume 20, Issue 2, pp 143–146

Gas Sensing performance of composite materials using conducting polymer/single-walled carbon nanotubes

  • Hyang Hee Choi
  • Junmin Lee
  • Ki-Young Dong
  • Byeong-Kwon Ju
  • Wooyoung Lee
Articles

DOI: 10.1007/s13233-012-0030-5

Cite this article as:
Choi, H.H., Lee, J., Dong, KY. et al. Macromol. Res. (2012) 20: 143. doi:10.1007/s13233-012-0030-5

Abstract

We report the fabrication of a novel gas sensor that utilizes electrical resistance changes in electrically conductive polyaniline (PANI) and single-walled carbon nanotube (SWNT) composite materials and its sensing property when NH3 and CO gases co-existed. In addition, we investigated the concentration dependence of electrical properties of the PANI/SWNT composite material at room temperature using real-time monitoring. To improve the gas sensor properties, we deposited PANI using a drop-casting method to warp the PANI surrounding the SWNT. The PANI/SWNT composite material sensors showed a faster response to NH3 gas than CO gas. The CO gas increased the composite conductance, while the NH3 gas had the opposite effect.

Keywords

gas sensors electrical resistance conducting polymer single-walled carbon nanotubes (SWNTs) unsafe gases 

Copyright information

© The Polymer Society of Korea and Springer Netherlands 2012

Authors and Affiliations

  • Hyang Hee Choi
    • 1
  • Junmin Lee
    • 1
  • Ki-Young Dong
    • 2
  • Byeong-Kwon Ju
    • 2
  • Wooyoung Lee
    • 1
  1. 1.Department of Materials Science and EngineeringYonsei UniversitySeoulKorea
  2. 2.Display and Nanosystem Laboratory, College of EngineeringKorea UniversitySeoulKorea