IJNCSE - VOLUME - 2

INTERNATIONAL JOURNAL OF NANO CORROSION SCIENCE ENGINEERING

VOLUME - 2

ISSUE - 1

ISSN : 2395 – 7018


Research Article

TITLE :

Effect Of Polyethoxyethylene N, N, N` 1, 3 Diamino Propane On The Corrosion Of Mild Steel In Acidic Solutions

AUTHORS

Namita K. Johar[a], K. Bhrara[b], R.Epshiba [c] and G. Singh[d]*

[a] Department of Chemistry, Maharaja Agarsen Institute of Technology, Guru Gobind Singh Indraprastha University, Delhi, India. namita_kh2002@yahoo.co.in.

[b] Department of Chemistry, Aditi Mahavidyalaya, University of Delhi, Delhi-110039, India. kbhrara@yahoo.com.

[c] Department of Chemistry, Sri Muthukumaran Institute of Technology, Chennai, Tamil Nadu, India 600026.
[d] Department of Chemistry, University of Delhi, Delhi-110007, India. gurmeet123@gmail.com.

ABSTRACT

 

The effect of polyethoxyethylene N,N,N` 1,3 diaminopropane (POENNN) on the corrosion of mild steel (MS) in 0.5 mol L-1 sulfuric acid has been studied at different concentrations and temperatures using polarization techniques and electrochemical impedance technique. The corrosion decreased considerably in presence of POENNN. An inhibition efficiency of 90% was evidenced in acidic solutions and was found to vary with the concentration of the inhibitor and the temperature. POENNN adsorbed on the mild steel surface according to the Temkin adsorption isotherm and the magnitude of activation energies confirms physiosorption. The polymer acted as a mixed type of inhibitor. Scanning electron microscopic study was used to study the surface morphology of inhibited and uninhibited metal samples. The results were further supplemented by FT-IR spectroscopy.

 

Keywords: Adsorption, Corrosion inhibition; Electrochemical impedance technique; FTIR spectroscopy; Scanning electron microscopy; Temkin isotherm.

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