Electrochemical synthesis of poly(N-methylpyrrole) films on copper electrodes from an aqueous oxalic acid has been achieved. A potential higher than 2 V (SCE) was needed to generate the polymer, for this reason, the polymer was in the overoxidized state. The inhibiting corrosion properties of this coating on copper were investigated for the first time in aqueous 0.1 M sodium chloride solution using potentiodynamic polarization, Tafel analyses. open-circuit potential and electrochemical impedance spectroscopy. Corrosion protection properties comparable to those of polypyrrole (PPy) films were observed for these films. A physical barrier effect is the most likely protection mechanism. (C) 2009 Elsevier B.V. All rights reserved.
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Namik Kemal Univ, Fac Arts & Sci, Dept Chem, Degirmenalti Campus 59030, Tekirdag, Turkey
Univ Calif Los Angeles, Dept Chem & Biochem, 405 Hilgard Ave, Los Angeles, CA 90024 USANamik Kemal Univ, Fac Arts & Sci, Dept Chem, Degirmenalti Campus 59030, Tekirdag, Turkey
Ates, Murat
Kamer, Levent
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Namik Kemal Univ, Fac Arts & Sci, Dept Chem, Degirmenalti Campus 59030, Tekirdag, TurkeyNamik Kemal Univ, Fac Arts & Sci, Dept Chem, Degirmenalti Campus 59030, Tekirdag, Turkey
Kamer, Levent
Ozkan, Haydar
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Fatih Sultan Mehmet Vakif Univ, Fac Engn & Architecture, Dept Biomed Engn, Istanbul, Turkey
Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USANamik Kemal Univ, Fac Arts & Sci, Dept Chem, Degirmenalti Campus 59030, Tekirdag, Turkey