Open AccessHumidity Sensors Based on Titanium Oxide/Polyvinyl Alcohol Composite Nanofibers via Electrospinning
Author(s) -
Yu Kyung Jeong,
Sejin Choi,
Han Seong Kim
Publication year - 2017
Publication title -
textile science and engineering
Language(s) - English
Resource type - Journals
eISSN - 2288-6419
pISSN - 1225-1089
DOI - 10.12772/tse.2017.54.001
Subject(s) - polyvinyl alcohol , electrospinning , nanofiber , composite number , materials science , humidity , titanium oxide , composite material , oxide , titanium , chemical engineering , polymer , engineering , metallurgy , physics , thermodynamics
c2017 The Korean Fiber Society Abstract: In this study, titanium oxide(TiO2)/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 TiO2. 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 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.
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