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Inverted emulsion cast electrically conducting polyaniline-polystyrene blends

Rao, Palle Swapna and Sathyanarayana, DN (2002) Inverted emulsion cast electrically conducting polyaniline-polystyrene blends. In: Journal of Applied Polymer Science, 86 (5). 1163 - 1171.

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Abstract

An inverted emulsion method for the synthesis of electrically conductive polyaniline-polystyrene blends of different compositions (10, 30, 50, 70, and 85%, wt/wt) is described. Polymerization of aniline is carried out in chloroform in the dispersed phase by using benzoyl peroxide as a novel oxidant and sulfosalicylic acid as the dopant. The blends synthesized with benzoyl peroxide as the oxidant are of high purity and the excess benzoyl peroxide is readily removed with acetone, which is used to break the emulsion and precipitate the polymer. The absorption spectra, FTIR, FT Raman, and electron paramagnetic resonance spectroscopy confirm the presence of polyaniline in the salt form and polystyrene in the blend. The thermal stability of polyaniline salt decreases with an increase in polystyrene content in the blend. The SEM studies show that the particles of polyaniline-sulfosalicylic acid are dispersed on the polystyrene surface. The blends of polyaniline-polystyrene prepared by the present method were found to display conductivities as high as $0.5-0.1 S cm^-^1.$

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Willey & Sons
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 29 May 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/11100

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