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Water-Soluble Conductive Blends of Polyaniline and Poly(vinyl alcohol) Synthesized by Two Emulsion Pathways

Rao, Palle Swapna and Subrahmanya, S and Sathyanarayana, DN (2005) Water-Soluble Conductive Blends of Polyaniline and Poly(vinyl alcohol) Synthesized by Two Emulsion Pathways. In: Journal of Applied Polymer Science, 98 (2). pp. 583-590.

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Abstract

Water-soluble, electrically conductive polyaniline (PANI)-poly(vinyl alcohol) (PVA) blends of different compositions (10, 30, 50, and 70 w/w) were synthesized by emulsion and inverted emulsion methods with ammonium persulfate and benzoyl peroxide as the oxidants, respectively, with PANI protonated with sulfosalicylic acid. The absorption, Fourier transform infrared, Fourier transform Raman, NMR, and electron paramagnetic resonance (EPR) spectroscopic studies suggested chemical interaction between PANI and PVA. The morphology of the blends depended on the method of synthesis as observed from scanning electron microscopy, X-ray diffraction, and particle size measurements. The blends showed relatively improved mechanical strengths but had lower degradation temperatures than the PANI salt and displayed conductivities as high as $10^-^2 to 10^-^1 S/cm$. The blends synthesized by the inverse emulsion method had smaller particle sizes, higher crystallinities, and better mechanical properties.

Item Type: Journal Article
Additional Information: The Copyright belongs to John Wiley & Sons Inc.
Keywords: blends;emulsion polymerization;conducting polymers;mechanical properties
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 22 Feb 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ernet.in/id/eprint/5534

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