title: Humidity sensitive properties of alkoxysilane-crosslinked polyelectrolyte using sol-gel process.
abstract: New trialkoxysilyl group-containing copolymers for humidity-sensitive polyelectrolytes were prepared by copolymerization of [2-(methacryloyloxy)ethyl]trimethyl ammonium chloride (METAC), 3-(trimethoxysilyl)propyl methacrylate (TSPM) and 2-ethylhexyl acrylate (2-EHA). They were self-crosslinkable copolymers composed of different contents of METAC/TSPM/2-EHA = 4/1/5 and 4/2/4. The resistance varied from 10(7) to 10(3)[capital Omega] between 20% RH and 95% RH, which was required for a humidity sensor operating at ambient humidity. Temperature dependence, hysteresis, response time, water durability and long-term stability at high temperature and humidity were also measured and estimated.
authors.affiliation: Department of Chemistry, Dankook University, Cheonan, Chungnam 330-714, Korea.
authors.forename: Chil-Won
authors.initials: CW
authors.lastname: Lee
authors.forename: Byoung-Koo
authors.initials: BK
authors.lastname: Choi
authors.forename: Myoung-Seon
authors.initials: MS
authors.lastname: Gong