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Synthesis of oxalate doped polyaniline and its corrosion protection performance

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Abstract

It is known that dopants present in polyaniline (PANI) play an important role in corrosion protection of mild steel since the dopant ions form a secondary layer with iron. Since oxalate ions form a stable iron oxalate layer on mild steel, a study has been made on the corrosion protection performance of steel by vinyl coating containing oxalate doped PANI in acid and neutral media. Electrochemical impedance spectroscopy (EIS) studies have shown that the oxalate doped PANI is able to protect mild steel in sodium chloride solution since the impedance values are maintained at 1010 Ω cm2 even after 100 days of exposure.

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Acknowledgments

The authors thank the director, Central Electrochemical Research Institute for his kind permission to carry out the work. They also thank CSIR, New Delhi for the financial support under NWP–12 projects. One of the authors (K.K) thank CSIR, New Delhi for the financial support through Senior Research Fellowship.

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Authors and Affiliations

  1. CSIR-Central Electrochemical Research Institute, Karaikudi, 630006, India

    Kandhasamy Kamaraj, Tamilvanan Siva, Sadagopan Sathiyanarayanan, Sundarrajan Muthukrishnan & Gopalachari Venkatachari

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  1. Kandhasamy Kamaraj
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  2. Tamilvanan Siva
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  3. Sadagopan Sathiyanarayanan
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  4. Sundarrajan Muthukrishnan
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  5. Gopalachari Venkatachari
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Correspondence to Sadagopan Sathiyanarayanan.

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Kamaraj, K., Siva, T., Sathiyanarayanan, S. et al. Synthesis of oxalate doped polyaniline and its corrosion protection performance. J Solid State Electrochem 16, 465–471 (2012). https://doi.org/10.1007/s10008-011-1354-3

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  • DOI: https://doi.org/10.1007/s10008-011-1354-3

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