Jeyaprabha, C. and Sathiyanarayanan, S. and Venkatachari, G. (2006) Polyaniline as Corrosion Inhibitor for Iron in Acid Solutions. Journal of Applied Polymer Science, 101 (4). pp. 2144-2153. ISSN 0021-8995

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Abstract

In recent years, polymer amines have been studied as an efficient corrosion inhibitor for iron in acid media. In this article, the performance of water soluble polyaniline as corrosion inhibitor for iron in 0.5M H2SO4 has been evaluated by potentiodynamic polarization, linear polarization, and electrochemical impedance spectroscopy and compared with the performance of the aniline monomer. It has been found that polyaniline is an efficient inhibitor, since the maximum efficiency of 84% has been observed at a concentration of 100 ppm, whereas the monomer has accelerated the corrosion. FTIR studies have shown that the polyaniline is strongly adsorbed on the iron surface and inhibits the corrosion effectively. However, aniline has been found to improve the passivation tendency of iron at higher concentrations.

Item Type:	Article
Uncontrolled Keywords:	corrosion inhibition; polymer amines; polyaniline; polarization; impedance
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	08 May 2012 06:44
Last Modified:	08 May 2012 06:44
URI:	http://cecri.csircentral.net/id/eprint/688

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