Humidity sensitive properties of alkoxysilane-crosslinked polyelectrolyte using sol-gel process
Literature Information
Publication Date
2004-06-07
DOI
10.1039/B404334K
Impact Factor
4.616
Authors
Chil-Won Lee, Byoung-Koo Choi, Myoung-Seon Gong
View Original
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 107 to 103 Ω 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.
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