Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Polymeric Humidity Sensor Using Polyelectrolyte Derived from Poly(amide-sulfone)s

  • Jeon, Young-Min (Department of Chemistry and Institute of Basic Science, Dankook University) ;
  • Gong, Myoung-Seon (Department of Chemistry and Institute of Basic Science, Dankook University)
  • Published : 2009.04.25
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Abstract

New polyelectrolytes derived from poly(amide-sulfone)s and 1,5-dibromopentane were simultaneously fabricated on the electrode by the crosslinking reaction. The substrate was pretreated with a bromoalkyl-containing, silane-coupling agent to anchor the humidity-sensitive membrane to the substrate through the covalent bond. When the resistance dependence on the relative humidity of the crosslinked poly(amide-sulfone)s was measured, the resistance varied by three orders of magnitude between 20%RH and 90%RH, which was the required RH range for a humidity sensor operating at ambient humidity. Their water durability, long-term stabilities under various environments, hysteresis and response and recovery times were measured and evaluated as a humidity-sensing membrane.

Keywords

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