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Synthesis by inverse emulsion pathway and characterization of conductive polyaniline-poly(ethylene-co-vinyl acetate) blends

Rao, Palle Swapna and Subrahmanya, S and Sathyanarayana, DN (2003) Synthesis by inverse emulsion pathway and characterization of conductive polyaniline-poly(ethylene-co-vinyl acetate) blends. In: Synthetic Metals, 139 (2). pp. 397-404.

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Abstract

Inverted emulsion methods were employed for the synthesis of electrically conductive polyaniline-poly(ethylene-co-vinyl acetate) (EVA) blends of different compositions (30, 50, 60, 70 and 80 wt.%) using benzoyl peroxide as a novel oxidant. Polymerization of aniline was carried out in a solution of EVA dissolved in an equimolar mixture of toluene and chlorobenzene as the continuous phase with camphor sulphonic acid as the dopant. The absorption spectra, FT-IR, FT Raman, NMR and EPR spectroscopic studies suggest the presence of chemical interaction (electrostatic) between polyaniline salt. The SEM studies revealed both granular and fibrillar morphology while the hot pressed films exhibit fluid like morphology. The blends show relatively higher mechanical strengths and the blend Pani(20)-EVA(80) (wt.%) gave the highest value for elongation at break.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: Polyaniline;Benzoyl peroxide;Inverse emulsion;Conductivity;NMR
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 18 Apr 2007
Last Modified: 19 Sep 2010 04:37
URI: http://eprints.iisc.ernet.in/id/eprint/10697

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