Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Ionic Liquid/Styrene-Acrylonitrile Copolymer Nanofibers as Chemiresistor for Alcohol Vapours

  • Kim, Min-Jae (Department of Chemical Engineering, Inha University) ;
  • Kang, Eun-Soo (Department of Chemical Engineering, Inha University) ;
  • Park, Dong-Wha (Department of Chemical Engineering, Inha University) ;
  • Shim, Bong-Sup (Department of Chemical Engineering, Inha University) ;
  • Shim, Sang-Eun (Department of Chemical Engineering, Inha University)
  • Received : 2012.04.28
  • Accepted : 2012.05.25
  • Published : 2012.09.20
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Abstract

SAN/$BMIPF_6$ nanofibers were fabricated by an electrospinning process and used as chemiresistors for sensing alcohol vapours. A hydrophobic and air-stable ionic liquid, $BMIPF_6$, was used to impart electrical conductivity to insulating SAN nanofibers. The effects of $BMIPF_6$ addition on the morphology of the nanofibers were explained in terms of surface tension, viscosity and conductivity. After exposing the SAN/$BMIPF_6$ nanofibers collected on an interdigitated electrode to alcohol vapours (ethanol, 1-propanol and 1-butanol), the resistance of the nanofibers decreased due to adsorption of alcohol molecules. The electrospun SAN/$BMIPF_6$ nanofibers sensor exhibited good sensitivity and reproducibility.

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