期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 106, 期 2, 页码 626-631出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2004.09.011
关键词
polyaniline; poly(4-styrenesulfonate-co-maleic acid); spin-cast film; ammonia sensor
A novel conductive polyaniline is synthesized using poly(4-styrenesulfonate-co-maleic acid) as counter ion and template. The resistance of this electroactive polymer increases in the presence of gases such as ammonia. This transducing property is exploited and spin-cast film of this material on glass substrate is established as ammonia gas sensor module, for gas concentrations in the range 5-250 ppm. In this range, the response and recovery times are typically 50-1000 s. The resistance response (R/R-0) at short time scales of about 150 s, is shown to vary linearly with the ammonia concentration. (c) 2004 Elsevier B.V. All rights reserved.
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