Inkjet Printing of Polymeric Resistance Humidity Sensor Using UV-Curable Electrolyte Inks

摘要

UV-curable electrolytes inks were prepared by dissolving [2-[(methacryloyloxy)ethyl]dimethyl]propyl-aminium bromide (MEPAB),l,5-[bis(2-methacryloxyethyl)dimethyl ammono]penthane dibromide (MDAPD),hexafunctional reactive oligomer (SP1013),trimethylolpropane triacrylate (TMPTA) and aphotoinitiator in metha-nol/2-methoxyethanol.The compositions of the electrolyte inks were MEPAB/MDAPD/SP1013/TMPTA=6/24/ 17.2/12.8,15/15/17.2/12.8 and 24/6/17.2/12.8.Humid-membranes were deposited on a gold electrode/alumina electrode using an ink-jet printer equipped with a UV lamp followed by immediate UV curing.The humidity-sensing characteristics including hysteresis,frequency and temperature dependence,response time and water durability were estimated.