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http://dx.doi.org/10.5229/JKES.2003.6.2.113

Electrochemistry and Corrosion Characteristics of Polyaniline Dispersion Coating for Protection of Steels  

Huh, Jae-Hoon (Department of Chemistry, Myongji University)
Oh, Eung-Ju (Department of Chemistry, Myongji University)
Cho, Jeong-Hwan (Department of Advanced Materials, Kosin University)
Publication Information
Journal of the Korean Electrochemical Society / v.6, no.2, 2003 , pp. 113-118 More about this Journal
Abstract
Processible polyaniline (PAM) dispersions consisting of polyaniline micro-particles, cyclohexanone, and a polymeric surfactant were prepared in a micro-milling machine with various mixing conditions. The electrochemical properties of the dispersion film coated on Pt electrode were investigated by cyclic voltammetry (CV). The electrochemistry of the PAM dispersion coatings was basically similar to a pure PAM coating based on the results of CV. The results of polarization measurements and open circuit potential measurements carried out in $3\;wt.\%$ NaCI solution showed increase in corrosion potential when the PANI dispersion coatings applied on steel surface. Variation of open circuit potential $(OCP,\;V_{OC})$ of the dispersion coating/steel electrodes was observed, which differed with milling conditions. The results demonstrated practical use of the conducting polymer dispersion as a coating material for corrosion prevention of steel.
Keywords
Polyaniline dispersion; Cyclic voltammetry(CV); Polarization measurement; Open circuit potential; Corrosion prevention.;
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