Issue

Vol. 37 No. 11 (2025): Vol 37 Issue 11, 2025

Copyright (c) 2025 Karthika Shetty, Jayadev, Arjun Sunil Rao

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Thermal and Electrochemical Studies of PANI-Graphene Nanocomposite on Mild Steel in Acidic Media

https://doi.org/10.14233/ajchem.2025.34345
Karthika Shetty
Department of Chemistry, R.N.S. Institute of Technology, Bangalore-560098, India
https://orcid.org/0000-0002-9570-3264
Jayadev
Department of Chemistry, S.J.B. Institute of Technology, Bangalore-560060, India
https://orcid.org/0000-0002-2096-9770
Arjun Sunil Rao
Department of Electronics and Communication Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, Udupi-576104, India
https://orcid.org/0000-0002-8537-3775

Corresponding Author(s) : Arjun Sunil Rao

arjun.rao@manipal.edu

Asian Journal of Chemistry, Vol. 37 No. 11 (2025): Vol 37 Issue 11, 2025

Abstract

In present study, Epoxy-coated polyaniline-graphene nanocomposites (PGNCs) were synthesized via in situ polymerization to investigate their thermal stability and electrochemical performance as protective coatings on mild steel in acidic environments. The PGNCs were characterized using Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), ultraviolet-visible spectroscopy (UV-Vis), Raman spectroscopy and X-ray diffraction (XRD). To evaluate their anticorrosive performance, the synthesized PGNCs were incorporated into an epoxy matrix composed of araldite resin and a hardener. Various concentrations of PGNC were uniformly dispersed in a fixed volume of the epoxy system using a mechanical mixing method. The resulting epoxy nanocomposite coatings were then applied onto mild steel substrates and exposed to acidic media. Corrosion protection efficiency was assessed using electrochemical measurements performed with an electrochemical workstation.

Keywords

Polyaniline Conducting polymer Graphene Polymerization Corrosion studies
(1)
Shetty, K.; Jayadev; Rao, A. S. Thermal and Electrochemical Studies of PANI-Graphene Nanocomposite on Mild Steel in Acidic Media. ajc 2025, 37, 2759-2765.
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. H. Wang, P. Shi, M. Rui, A. Zhu, R. Liu and C. Zhang, Prog. Org. Coat., 139, 105476 (2020); https://doi.org/10.1016/j.porgcoat.2019.105476.
  2. N. Ruecha, R. Rangkupan, N. Rodthongkum and O. Chailapakul, Biosensors and bio electronics, 52 13 (2014); https://doi.org/10.1016/j.bios.2013.08.018
  3. L. Wang, X. Lu, S. Lei and Y. Song, J. Mater. Chem. A, 2, 4491 (2014); https://doi.org/10.1039/C3TA13462H
  4. S. Yang, S. Zhu and R. Hong, Coatings, 10, 1215 (2020); https://doi.org/10.3390/coatings10121215
  5. Z. Wu, X. Chen, S. Zhu, Z. Zhou, Y. Yao, W. Quan and B. Liu, Sens. Actuators B Chem., 178, 485 (2013); https://doi.org/10.1016/j.snb.2013.01.014
  6. S. Dimitra and P.D. Praveen, Chem. Paper, 71, 459 (2017). https://doi.org/10.1007/s11696-016-0044-0
  7. S. Karthika, Jayadev and K. Raj, Mater. Today Proc., 38(Part 5), 2493 (2021); https://doi.org/10.1016/j.matpr.2020.07.515
  8. A.M. Solonaru and M. Grigoras, Express Polym. Lett., 11, 127 (2017); https://doi.org/10.3144/expresspolymlett.2017.14
  9. B. Ramezanzadeh, G. Bahlakeh and M. Ramezanzadeh, Corros. Sci., 137, 111 (2018); https://doi.org/10.1016/j.corsci.2018.03.038
  10. T.H. Han, N. Parveen, J.H. Shim, A.T.N. Nguyen, N. Mahato and M.H. Cho, Ind. Eng. Chem. Res., 57, 6705 (2018); https://doi.org/10.1021/acs.iecr.7b05314
  11. K. Shetty, Jayadev, K. Raj and N. Mohan, Mater. Today Proc., 27, 2158 (2020); https://doi.org/10.1016/j.matpr.2019.09.087
  12. W. Kai, L. Liwei, X. Wen, Z. Shengzhe, L. Yong, Z. Hongwei, and S. Zongqiang, Int. J. Electrochem. Sci., 12, 8306 (2017); https://doi.org/10.20964/2017.09.06
  13. G.S. Hikku, K. Jeyasubramanian, A. Venugopal and R. Ghosh, J. Alloys Compd., 716, 259 (2017); https://doi.org/10.1016/j.jallcom.2017.04.324
  14. P.A. Senthilvasan and M. Rangarajan, Mater. Res. Express, 5, 045901 (2018); https://doi.org/10.1088/2053-1591/aace3f
  15. P. Modak, S.B. Kondawar and D.V. Nandanwar, Proc. Mater. Sci., 10, 588 (2015); https://doi.org/10.1016/j.mspro.2015.06.010
  16. A.S. Rao, B.S. Sannakashappanavar, A. Jayarama and R. Pinto, Results Chem., 7, 101533 (2024); https://doi.org/10.1016/j.rechem.2024.101533
  17. N.J. Abdullah, A.F. Essa, and S.M. Hasan, Iraqi J. Sci., 62, 138 (2021); https://doi.org/10.24996/ijs.2021.62.1.13
  18. N. Promphet, P. Rattanarat, O. Chailapakul, R. Rangkupan and N. Rodthongkum, Sens. Actuators B Chem., 207, 526 (2014); https://doi.org/10.1016/j.snb.2014.10.126
  19. F. Xiao, S. Yang, Z. Zhang, H. Liu, J. Xiao, L. Wan, J. Luo, S. Wang and Y. Liu, Sci. Rep., 5, 9359 (2015); https://doi.org/10.1038/srep09359
  20. Y. Sun, Q. Wang, C. Chen, X. Tan and X. Wang, Environ. Sci. Technol., 46, 6020 (2012); https://doi.org/10.1021/es300720f
  21. V.V. Shunaev and O.E. Glukhova, J. Phys. Chem. C, 120, 4145 (2016); https://doi.org/10.1021/acs.jpcc.5b12616
  22. E.A. Sanches, J.C. Soares, R.M. Iost, V.S. Marangoni, G. Trovati, T. Batista, A.C. Mafud, A. Zucolotto and Y.P. Mascaren, J. Nanomater., 2011, 697071 (2011); https://doi.org/10.1155/2011/697071
  23. Y. Du, P. Xiao, J. Yuan and J. Chen, Coatings, 10, 892 (2020); https://doi.org/10.3390/coatings10090892
  24. K. Zhang, L.L. Zhang, X.S. Zhao and J. Wu, Chem. Mater., 22, 1392 (2010); https://doi.org/10.1021/cm902876u
  25. Z. Çıplak, A. Yıldız and N. Yıldız, J. Energy Storage, 32, 101846 (2020); https://doi.org/10.1016/j.est.2020.101846
  26. N. Mahato, N. Parveen and M.H. Cho, Mater. Lett., 161, 372 (2015); https://doi.org/10.1016/j.matlet.2015.08.138
Read More
Author biographies is not available.
Crossref
Scopus
Google Scholar
Europe PMC
Download
PDF
Statistic
Read Counter : 73 Download : 69
PlumX