Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution

Effective inhibition of metallic corrosion to prevent its consequent loss is one of the serious apprehensions for industries in the modern world. This paper analyses the application of poly(2-ethyl-2-oxazoline) (PEOX) as an effective inhibitor of corrosion, when it is made to be in contact with the...

Full description

Bibliographic Details
Main Authors: Zachariah Pulluparampil Mathew, Keerthi Rajan, Cyril Augustine, Bincy Joseph, Sam John
Format: Article
Language:English
Published: Elsevier 2020-11-01
Series:Heliyon
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2405844020324038
id doaj-f90cf804449c45549c9d6e38f8aa6fa8
record_format Article
spelling doaj-f90cf804449c45549c9d6e38f8aa6fa82020-12-09T06:38:54ZengElsevierHeliyon2405-84402020-11-01611e05560Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solutionZachariah Pulluparampil Mathew0Keerthi Rajan1Cyril Augustine2Bincy Joseph3Sam John4Department of Chemistry, St. Berchmans College (Autonomous) Campus, Mahatma Gandhi University, Kottayam, 686101, India; Department of Chemistry, Rajiv Gandhi Institute of Technology, Kottayam, 686501, IndiaDepartment of Chemistry, St. Berchmans College (Autonomous) Campus, Mahatma Gandhi University, Kottayam, 686101, IndiaDepartment of Chemistry, St. Berchmans College (Autonomous) Campus, Mahatma Gandhi University, Kottayam, 686101, IndiaSt. Mary's College, Thrissur, 680020, IndiaDepartment of Chemistry, St. Berchmans College (Autonomous) Campus, Mahatma Gandhi University, Kottayam, 686101, India; Corresponding author.Effective inhibition of metallic corrosion to prevent its consequent loss is one of the serious apprehensions for industries in the modern world. This paper analyses the application of poly(2-ethyl-2-oxazoline) (PEOX) as an effective inhibitor of corrosion, when it is made to be in contact with the surfaces of mild steel (MS). The sustainability of MS against corrosion in 0.1 M Hydrochloric acid solution in the presence of known concentration of PEOX is assessed by potentiodynamic polarization (PDP) measurements, linear polarization studies (LPR), and electrochemical impedance spectroscopy (EIS). It was observed that PEOX behaves as better inhibitor for mild steel corrosion in 0.1 M HCl solution and it show enhanced inhibition efficiency (IE%) 79% at a concentration of 50 ppm. The polarization experiments indicated that addition of PEOX in concentrations varies from 25 ppm to 50 ppm induces a decrease of both cathodic and anodic currents densities. Also, the micrographs recorded by the Scanning Electron Microscopy confirm that molecules of PEOX act as corrosion inhibitors for the surfaces of MS in 0.1 M HCl. The stability of the MS surface in a corrosion-prone environment is traced by measuring the contact angles of water droplets placed on the MS surface, to quantify the extent of deterioration, if any, due to corrosion. The results presented here show that the compound PEOX performs as a mixed-type inhibitor against corrosion at the MS surface in acidic medium. Theoretical studies based on the electronic structure of PEOX in aqueous medium also support its performance as a successful corrosion-inhibitor.http://www.sciencedirect.com/science/article/pii/S2405844020324038Materials scienceMaterials chemistryElectrochemistryPhysical chemistryPEOXMild steel
collection DOAJ
language English
format Article
sources DOAJ
author Zachariah Pulluparampil Mathew
Keerthi Rajan
Cyril Augustine
Bincy Joseph
Sam John
spellingShingle Zachariah Pulluparampil Mathew
Keerthi Rajan
Cyril Augustine
Bincy Joseph
Sam John
Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
Heliyon
Materials science
Materials chemistry
Electrochemistry
Physical chemistry
PEOX
Mild steel
author_facet Zachariah Pulluparampil Mathew
Keerthi Rajan
Cyril Augustine
Bincy Joseph
Sam John
author_sort Zachariah Pulluparampil Mathew
title Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
title_short Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
title_full Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
title_fullStr Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
title_full_unstemmed Corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1M HCl solution
title_sort corrosion inhibition of mild steel using poly (2-ethyl -2-oxazoline) in 0.1m hcl solution
publisher Elsevier
series Heliyon
issn 2405-8440
publishDate 2020-11-01
description Effective inhibition of metallic corrosion to prevent its consequent loss is one of the serious apprehensions for industries in the modern world. This paper analyses the application of poly(2-ethyl-2-oxazoline) (PEOX) as an effective inhibitor of corrosion, when it is made to be in contact with the surfaces of mild steel (MS). The sustainability of MS against corrosion in 0.1 M Hydrochloric acid solution in the presence of known concentration of PEOX is assessed by potentiodynamic polarization (PDP) measurements, linear polarization studies (LPR), and electrochemical impedance spectroscopy (EIS). It was observed that PEOX behaves as better inhibitor for mild steel corrosion in 0.1 M HCl solution and it show enhanced inhibition efficiency (IE%) 79% at a concentration of 50 ppm. The polarization experiments indicated that addition of PEOX in concentrations varies from 25 ppm to 50 ppm induces a decrease of both cathodic and anodic currents densities. Also, the micrographs recorded by the Scanning Electron Microscopy confirm that molecules of PEOX act as corrosion inhibitors for the surfaces of MS in 0.1 M HCl. The stability of the MS surface in a corrosion-prone environment is traced by measuring the contact angles of water droplets placed on the MS surface, to quantify the extent of deterioration, if any, due to corrosion. The results presented here show that the compound PEOX performs as a mixed-type inhibitor against corrosion at the MS surface in acidic medium. Theoretical studies based on the electronic structure of PEOX in aqueous medium also support its performance as a successful corrosion-inhibitor.
topic Materials science
Materials chemistry
Electrochemistry
Physical chemistry
PEOX
Mild steel
url http://www.sciencedirect.com/science/article/pii/S2405844020324038
work_keys_str_mv AT zachariahpulluparampilmathew corrosioninhibitionofmildsteelusingpoly2ethyl2oxazolinein01mhclsolution
AT keerthirajan corrosioninhibitionofmildsteelusingpoly2ethyl2oxazolinein01mhclsolution
AT cyrilaugustine corrosioninhibitionofmildsteelusingpoly2ethyl2oxazolinein01mhclsolution
AT bincyjoseph corrosioninhibitionofmildsteelusingpoly2ethyl2oxazolinein01mhclsolution
AT samjohn corrosioninhibitionofmildsteelusingpoly2ethyl2oxazolinein01mhclsolution
_version_ 1724388364618039296