N-cetyl-N,N,N trimethyl ammonium bromide (CTAB)-stabilized polyaniline: a corrosion inhibitor for mild steel
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 8 March 2018
Issue publication date: 23 March 2018
Abstract
Purpose
The purpose of this study is to compare the inhibitive effect of polyaniline (PAni) and N-cetyl-N,N,N trimethyl ammonium bromide (CTAB)-stabilized PAni in a hydrochloric acid (HCl) medium.
Design/methodology/approach
PAni has been deposited potentiodynamically on mild steel in the presence of CTAB as a stabilizing agent to achieve high corrosion inhibition performance by the polymer deposition. The corrosion inhibition studies of CTAB-stabilized PAni inhibitor in 0.1 M HCl acidic solution was carried out by electrochemical methods, namely, open-circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy technique.
Findings
The results of electrochemical studies have shown that the CTAB-stabilized PAni inhibitor has higher corrosion efficiency than PAni on mild steel in 0.1 M HCl solution. The maximum per cent efficiency evaluated using the potentiodynamic polarization method is approximately 91.9.
Originality/value
CTAB-stabilized PAni has never been studied as a corrosion inhibitor for mild steel in an acidic medium. The investigations demonstrate relatively the better corrosion inhibition efficiency and high dispersion of the polymer in the acidic medium.
Keywords
Acknowledgements
The author is thankful to School of Chemical Sciences, Universiti Sains Malaysia, for providing necessary research facilities during the post-doctoral studies.
Citation
Rashid, M., Waware, U.S., A. Rahim, A. and Hamouda, A.M.S. (2018), "N-cetyl-N,N,N trimethyl ammonium bromide (CTAB)-stabilized polyaniline: a corrosion inhibitor for mild steel", Anti-Corrosion Methods and Materials, Vol. 65 No. 2, pp. 146-151. https://doi.org/10.1108/ACMM-10-2015-1589
Publisher
:Emerald Publishing Limited
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