Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 130, Issue 3, Pages 1941-1948Publisher
WILEY
DOI: 10.1002/app.39379
Keywords
conducting polymers; nanostructured polymers; properties and characterization; sensors and actuators; synthesis and processing
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Funding
- DST, New Delhi, India [SR/S2/CMP-004/2009]
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Al2O3 mixed polyaniline composite with different dopant concentrations have been synthesized successfully by chemical oxidation method. X-ray diffraction, Fourier transform infrared spectroscopy, and UV-visible spectroscopy confirm the synthesis of the polyaniline and Al2O3 mixed polyaniline composite. Scanning electron microscopy shows the weak crystalline quality of the samples. The samples are found sensitive to ammonia gas. The sensing properties have been studied at different temperatures i.e. 25 degrees C, 50 degrees C, and 100 degrees C by varying the ammonia concentration over a range of 100-1500 ppm. The sensitivity increases with increasing Al2O3 concentration, increasing ammonia concentration, and also with increasing the sensing temperature. Sensitivity of these samples to ammonia gas is good with fast response. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1941-1948, 2013
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