Poly(N

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• 作者：M.I. Redondo ; E. Sá ; nchez de la Blanca ; M.V. Garcí ; a ; M.J. Gonzá ; lez-Tejera
• 关键词：Corrosion protection ; Conducting polymers ; Poly(N-methylpyrrole)
• 刊名：Progress in Organic Coatings
• 出版年：2009
• 出版时间：July 2009
• 年：2009
• 卷：65
• 期：3
• 页码：386-391
• 全文大小：632 K

文摘

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.