Study of the corrosion protection efficiency of polypyrrole/metal oxide nanocomposites as additives in anticorrosion coating
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 9 April 2020
Issue publication date: 12 May 2020
Abstract
Purpose
Polypyrrole (PPy) and PPy/metal oxide nanocomposites were synthesized by oxidative polymerization process, and its corrosion protection ability was studied by immersion test and electrochemical corrosion studies in 1 per cent HCl and 3.5 per cent NaCl solution.
Design/methodology/approach
The prepared composites were loaded in acrylic resin and subsequently coated on a mild steel surface. The characterization of the polymer composites using FT-IR, UV-vis, XRD and FE-SEM with EDS analysis confirmed the interaction between PPy and metal oxide nanoparticles. The PPy nanoparticles were less protected on the mild steel, but the nanocomposite coating with metal oxide nanoparticles dramatically increased the corrosion resistance.
Findings
According to the corrosion protection ability of the coating, it was demonstrated that the acrylic resin coating composed of PPy/metal oxide nanocomposites was highly efficient in protecting the mild steel compared to the PPy nanoparticles. The highest protection efficiency was obtained by PPy/TiO2 nanocomposites with acrylic resin coating.
Originality/value
To the best of the authors’ knowledge, this paper consists of original, unpublished work which is not under consideration for publication elsewhere and that all the co-authors have approved the contents of this manuscript and submission.
Keywords
Acknowledgements
The authors are thankful to the Department of Science and Technology (FAST TRACK and FIST), New Delhi, for using electrochemical workstation. UGC New Delhi for FT-IR and UV-visible spectroscopy at V.O. Chidambaram College.
Citation
Rajkumar, R. and Vedhi, C. (2020), "Study of the corrosion protection efficiency of polypyrrole/metal oxide nanocomposites as additives in anticorrosion coating", Anti-Corrosion Methods and Materials, Vol. 67 No. 3, pp. 305-312. https://doi.org/10.1108/ACMM-11-2019-2204
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited