Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Humidity Sensors Based on Titanium Oxide/Polyvinyl Alcohol Composite Nanofibers via Electrospinning

전기방사를 이용한 titanium oxide/polyvinyl alcohol 습도센서 제조 및 성능에 관한 연구

  • Jeong, Yu Kyung (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Choi, Sejin (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Kim, Han Seong (Department of Organic Material Science and Engineering, Pusan National University)
  • 정유경 (부산대학교 유기소재시스템공학과) ;
  • 최세진 (부산대학교 유기소재시스템공학과) ;
  • 김한성 (부산대학교 유기소재시스템공학과)
  • Received : 2016.11.11
  • Accepted : 2016.12.20
  • Published : 2017.02.28
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Abstract

In this study, titanium oxide($TiO_2$)/polyvinyl alcohol(PVA) electrospun composite nanofibers were used as a humidity sensing layer. The electrospinning behavior was observed to investigate the influence of different concentrations of $TiO_2$. In order to secure the structural stability of the sensing layer, which was dissolved under conditions of high humidity, the PVA-based sensing layer was crystallized at $180^{\circ}C$. The humidity sensing properties, including the impedance versus relative humidity and response-recovery time, were found to improve because of the structural advantage of the fiber-shaped sensing layer and the hydrophillic inorganic particles. Furthermore, The humidity sensing mechanism could be elucidated via the complex impedance plots and corresponding equivalent circuit.

Keywords

References

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