Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/13276
Title: Synthesis and characterization of polypyrrole–polyvinyl alcohol composite film with various organic acids dopants and their gas sensing behavior
Authors: Dupare, D B
Shirsat, M D
Aswar, A S
Keywords: Conducting polymer
Polypyrrol
Thin films
TMA gas sensor
Issue Date: Nov-2011
Publisher: NISCAIR-CSIR, India
Abstract: Polypyrrole–polyvinyl alcohol (PPY-PVA ) composite films with various organic acids such as camphor sulphonic acid (CSA), dodecyl benzene sulphonic acid (DBSA) and <i style="mso-bidi-font-style:normal">p</i>-toluene sulphonic acid (<i style="mso-bidi-font-style:normal">p</i>-TSA), have been synthesized <i>in situ</i> by chemical oxidative polymerization method. These synthesized films are characterized by using electrochemical technique, conductivity measurement, UV-visible spectroscopy, FTIR and SEM. It is observed that the PPY-PVA composite films provide good electrochemical properties, conductivity as well as polymer matrix with uniform and porous surface morphology which can be used for the immobilization of biocomponent. The current-voltage characterization reveals that these films are conducting in nature with ohmic behavior. The PPY-PVA doped composites thin films are used for different concentrations (ppm) of trimethyl ammonia and ammonia gas for their sensitivity at room temperature (304K). Results reveal that with organic acids dopant electrical property and environmental stability of PPY-PVA composites film are enhanced.
Description: 446-450
URI: http://hdl.handle.net/123456789/13276
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.18(6) [November 2011]

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