Electropolymerization of Polypyrrole and Polypyrrole-ZnO Nanocomposites on Mild Steel and Its Corrosion Protection Performance

被引:66
作者
Hosseini, M. G. [1 ]
Bagheri, R. [1 ]
Najjar, R. [2 ]
机构
[1] Univ Tabriz, Dept Phys Chem, Electrochem Res Lab, Tabriz, Iran
[2] Univ Tabriz, Dept Organ Chem, Polymer Res Lab, Tabriz, Iran
关键词
conducting polymers; nanocomposites; electrochemistry; corrosion; polypyrrole; CONDUCTING POLYMER-COATINGS; TUNGSTATE ION DOPANTS; STAINLESS-STEEL; COMPOSITES; PHOSPHATE;
D O I
10.1002/app.33952
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
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 (R(coat)) and corrosion resistance (R(corr)) values for the PPy-ZnO nanocomposite coating was much higher than that of pure PPy coated electrode. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 3159-3166,
引用
收藏
页码:3159 / 3166
页数:8
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