Polypyrrole electropolymerized on aluminum alloy 1100 doped with oxalate and tungstate anions

Polypyrrole films doped with oxalic acid and tungstate were potentiostatically electropolymerized on aluminum alloy 1100. Two statistical factorial designs (fractional and complete) were used to study the influence of the synthesis variables on the film performance against corrosion. Corrosion prote...

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Bibliographic Details
Published in:Journal of applied electrochemistry 2009, Vol.39 (1), p.93-100
Main Authors: Castagno, Kátia R. L., Azambuja, Denise S., Dalmoro, Viviane
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Electrochemistry
Industrial Chemistry/Chemical Engineering
Original Paper
Physical Chemistry
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Summary:Polypyrrole films doped with oxalic acid and tungstate were potentiostatically electropolymerized on aluminum alloy 1100. Two statistical factorial designs (fractional and complete) were used to study the influence of the synthesis variables on the film performance against corrosion. Corrosion protection of the polypyrrole films doped with oxalate and tungstate anions (PPy/OXA/W) on the aluminum alloy was evaluated by potentiometric and electrochemical impedance spectroscopy (EIS) measurements in a 0.05 mol L −1 NaCl solution. The results obtained showed that the best performance against corrosion was detected with the PPy/OXA/W film synthesized at 1.0 V, 1.5 C in 0.2 mol L −1 pyrrole, 0.1 mol L −1 oxalic acid and 0.05 mol L −1 sodium tungstate solutions provide a protective effect against corrosion.
ISSN:0021-891X
1572-8838
DOI:10.1007/s10800-008-9640-1