Research Articles

2019  |  Vol: 5(1)  |  Issue: 1(January-February)  |  https://doi.org/10.31024/ajpp.2019.5.1.16

A study on anticorrosion property of Drypetes sepiaria on carbon steel in acidic medium

JK. Alphonsa Juliet Helina¹, A. Peter Pascal Regis^2*

¹Research Scholar, PG and Research, Department of Chemistry, St. Joseph’s College,

Trichy-620002, Tamil Nadu, India

²Associate Professor, PG and Research, Department of Chemistry, St. Joseph’s College, Trichy-620002, Tamil Nadu, India

*Address for Corresponding Author

Dr. A. Peter Pascal Regis

Associate Professor,

PG and Research Department of Chemistry, St. Joseph’s College, Trichy-620002, Tamil Nadu, India

Abstract

Objective: The ethanolic extract of Drypetes sepiaria was used as corrosion inhibitor on carbon steel in acidic medium. The phytochemical screening, antimicrobial activity and GC-MS analysis of the plant extract were carried out. Material and Methods: The anticorrosion property of Drypetes sepiaria was determined by weight loss method, for various concentrations of the extract with Zn²⁺ ion and tartaric acid, citric acid and lactic acid as additives in 0.5M HCl medium. Results and Conclusion: The protective film that formed on the surface of the metal which resists the corrosion was confirmed by the spectral studies such as FT-IR, UV and fluorescence spectra. The film formation is also confirmed by the surface morphology SEM analysis. This shows the complex formation between the metal cation, additive and the phytoconstituents present in the extract of Drypetes sepiaria.

Keywords: Drypetes sepiaria, Carbon Steel, Corrosion, FT-IR, SEM, GC-MS