Selvaraj, M. and Palraj, S. and Maruthan, K. and Rajagopal, G. and Venkatachari, G. (2010) Synthesis and Characterization of Polypyrrole Composites for Corrosion Protection of Steel. Journal of Applied Polymer Science, 116. pp. 1524-1537. ISSN 0021-8995

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Abstract

Corrosion protection performance of epoxy polyamide coatings containing polypyrrole (PPy) composites for steel has been studied. PPy and its composites have been synthesized chemically using potassium permanganate and potassium per sulfate as oxidants. The PPy has been characterized by four probe method for conductivity, atomic absorption spectroscopy for elemental analysis, and Fourier transform infrared spectra for proving the incorporation of dopant in this polymers. The X-ray diffraction (XRD) study has revealed the presence of manganese dioxide in the polymer. The elemental analysis and the thermo gravimetric analysis measurements showed that the presence of manganese dioxide in the polymer is about 75%. The thermal stability of deprotonated polymer has improved. Electrochemical impedance spectroscopic analysis indicated that the epoxy polyamide/PPy-MnO2 coating showed the maximum resistance value of 2.196 � 107 X cm2 after 30 days immersion in 3% sodium chloride solution.

Item Type:	Article
Uncontrolled Keywords:	corrosion resistance; polypyrrole; XRD; elemental analysis
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	08 May 2012 08:25
Last Modified:	08 May 2012 08:25
URI:	http://cecri.csircentral.net/id/eprint/298

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