Functionalized graphene oxide-epoxy phenolic novolac nanocomposite: an efficient anticorrosion coating on mild steel in saline medium

Madhusudhana, Ambale Murthy and Mohana, Kikkeri Narasimha Shetty and Hegde, Mahesh Bhaskar and Nayak, Saurav Ramesh and Rajitha, Kamalon and Swamy, Ningappa Kumara (2020) Functionalized graphene oxide-epoxy phenolic novolac nanocomposite: an efficient anticorrosion coating on mild steel in saline medium. Advanced Composites and Hybrid Materials, 3 (2). pp. 141-155.

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Official URL: https://doi.org/10.1007/s42114-020-00142-8

Abstract

The present paper reports the fabrication of efficient anticorrosion coating material on mild steel using epoxy phenolic novolac (EPN) polymer. The EPN was prepared by refluxing the mixture of phenol formaldehyde amine and epoxy in a 1:1 weight ratio and characterized by H-1 NMR and FT-IR spectral studies. The graphene oxide (GO) was functionalized using 2-{4-2-hydroxy-3-(propan-2-ylamino) propoxy] phenyl} acetamide and thoroughly characterized by FT-IR, Raman, and energy dispersive X-ray spectroscopies and TEM techniques. The anticorrosion performance of the coated mild steel (MS) samples was studied by electrochemical impedance spectroscopy and potentiodynamic polarization techniques in 3.5 wt% NaCl medium. The results revealed that the anticorrosion ability of EPN coating was significantly enhanced by the incorporation of functionalized graphene oxide (FGO). The corrosion inhibition efficiency of 99.99% is achieved with 0.2 wt% FGO-grafted EPN matrix. Graphical abstract

Item Type: Article
Uncontrolled Keywords: Functionalized graphene oxide; Epoxy phenolic novolac; Mild steel; Anticorrosion coating; Electrochemical methods
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Mr Umendra uom
Date Deposited: 20 Feb 2021 09:29
Last Modified: 03 Nov 2022 10:27
URI: http://eprints.uni-mysore.ac.in/id/eprint/15569

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