Mallika, J and Brindha, T and Sathyanarayana Moorthy, V (2015) Synergistic effect between Starch and Substituted Piperidin-4-one on the Corrosion Inhibition of Mild Steel in Acidic Medium. Journal of Master Environmental Science, 6 (1). pp. 191-200. ISSN 2028-2508

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Abstract

The corrosion inhibition of mild steel in 1 N Hydrochloric acid in presence of natural polysaccharide (starch) is studied
using Electrochemical Impedance Spectroscopy (EIS), potentiodynamic polarization and weight loss measurements. The
effect of addition of very small concentration (0.2mM) of 2,6-diphenyl-3-methylpiperidin-4-one ( DPMP ) on the corrosion
behaviour of starch is studied. The temperature effect (30- 55o C) and the time effect (1, 2, 3, 4 and 24 h) are studied for
starch, DPMP, individually and for the mixture of starch and DPMP. The effect of DPMP on the corrosion behaviour of
starch appears to be synergistic in nature. The mixture of starch and DPMP shows greater stability towards higher
temperature and immersion period of 24 h. The formation of protective layer on mild steel surface is confirmed by FT-IR
spectroscopy. The quantum chemical parameters such as highest occupied molecular orbital (HOMO), lowest unoccupied
molecular orbital (LUMO) and band energy gap (∆E) are calculated as a supportive evidence.

Item Type: Article
Uncontrolled Keywords: Corrosion inhibition, Synergism, 2,6-diphenyl-3-methylpiperidin-4-one, EIS, quantum chemical studies
Divisions: PSG College of Arts and Science > Department of Chemistry
Depositing User: Mr Team Mosys
Date Deposited: 27 Jun 2023 06:05
Last Modified: 27 Jun 2023 06:05
URI: http://ir.psgcas.ac.in/id/eprint/1924

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