Water-resistive humidity sensor prepared by printing process using polyelectrolyte ink derived from new monomer
作者： Min-Ji Kim , Myoung-Seon Gong
DOI: 10.1039/C2AN15800K
关键词: Polymer 、 Relative humidity 、 Polymer chemistry 、 Chemical engineering 、 Polyelectrolyte 、 Monomer 、 Screen printing 、 Ammonium bromide 、 Polyimide 、 Membrane 、 Materials science
摘要: A simple strategy was developed based on a new monomer containing both photocurable function and ammonium salt, N-(2-cinnamoyloxy)ethyl-N-(2-(methacryloyloxy)ethyl)-N,N-dimethyl bromide (CMDAB) to obtain polyelectrolyte ink stable humidity-sensitive membranes by printing process. Humidity-sensitive are photocrosslinked polyelectrolytes obtained from copolymers of [2-(methacryloyloxy)ethyl] dimethyl propyl (MEPAB), CMDAB MMA. flexible gold electrode/polyimide pretreated with 2-(mercaptoethyl) cinnamamide (MEC) thiol-coupling agent for the purpose anchoring electrode. The sensors using screen methods reduced deflection sensor characteristics showing humidity precision ±1%RH. photocured copolymer MEPAB/CMDAB/MMA = 63/7/30 show good sensitivity (0.0586 logΩ/%RH) changing resistance approximately four orders magnitude relative varying 20% 95% fast response recovery time. resultant showed acceptable linearity (Y -0.04X + 7.0, R(2) -0.9900) small hysteresis. reliability including water long-term stability were estimated application prepared
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