Electropolymerization of polypyrrole and polypyrrole‐ZnO nanocomposites on mild steel and its corrosion protection performance

Polypyrrole (PPy) and Polypyrrole‐ZnO (PPy‐ZnO) nanocomposites were electrodeposited on mild steel and its corrosion protection ability was studied by Tafel and Impedance techniques in 3.5% NaCl solution. Pure Polypyrrole film was not found to protect the mild steel perfectly but the coating with na...

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Bibliographic Details
Published in:Journal of applied polymer science 2011-09, Vol.121 (6), p.3159-3166
Main Authors: Hosseini, M. G., Bagheri, R., Najjar, R.
Format: Article
Language:English
Subjects:
Applied sciences
Carbon steels
Coating
Composites
conducting polymers
Corrosion
Corrosion prevention
Corrosion resistance
Electrochemical impedance spectroscopy
electrochemistry
Exact sciences and technology
Forms of application and semi-finished materials
Materials science
Metals. Metallurgy
Nanocomposites
Nanostructure
Polymer industry, paints, wood
Polymers
polypyrrole
Polypyrroles
Protective coatings
Technology of polymers
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Summary:Polypyrrole (PPy) and Polypyrrole‐ZnO (PPy‐ZnO) nanocomposites were electrodeposited on mild steel and its corrosion protection ability was studied by Tafel and Impedance techniques in 3.5% NaCl solution. Pure Polypyrrole film was not found to protect the mild steel perfectly but the coating with nano‐sized ZnO (PPy‐ZnO) has dramatically increased the corrosion resistance of mild steel. Electrochemical Impedance Spectroscopy (EIS) measurements indicated that the coating resistance (Rcoat) and corrosion resistance (Rcorr) values for the PPy‐ZnO nanocomposite coating was much higher than that of pure PPy coated electrode. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.33952