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Surface Modified CaTiO3 Loaded in Polyaniline by Sodium Dodecyl Benzene Sulphonic Acid for Humidity Sensor

Parveen, Ameena and Koppalkar, Anilkumar R and Roy, Aashis S (2012) Surface Modified CaTiO3 Loaded in Polyaniline by Sodium Dodecyl Benzene Sulphonic Acid for Humidity Sensor. In: IEEE SENSORS JOURNAL, 12 (9). pp. 2817-2823.

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Official URL: http://dx.doi.org/10.1109/JSEN.2012.2203455

Abstract

Polyaniline-CaTiO3 nanocomposites with their various weight percentages were prepared by chemical oxidative in situ polymerization technique. The prepared composites were characterized by Fourier transform infrared spectroscopy, scanning electronic microscope, and X-ray diffraction. The temperature-dependent dc conductivity of polyaniline-CaTiO3 nanocomposite was studied within the range of 40-200 degrees C and found that 50 wt% shows high conductivity compared to other composites. Humidity sensor properties of polyaniline-CaTiO3 nanocomposite show better sensing properties and exhibit good linearity in sensing response curve, which discuss the implications of distortions and nonstoichiometry on their physical properties. Among all composites, 50 wt% of polyaniline-CaTiO3 nanocomposites show high sensitivity up to similar to 90% and their response-recovery times are 500 and 453 s, respectively.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the IEEE
Keywords: Calcium titanate; conducting polymers; nanocomposite; nanoscopic textures; polyaniline; sensor properties
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 10 Sep 2012 12:17
Last Modified: 10 Sep 2012 12:17
URI: http://eprints.iisc.ernet.in/id/eprint/44992

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