Application of some oligopolymers as effective corrosion inhibitors for mild steel in 1M HCl: Gravimetric, thermodynamic and electrochemical analysis

Chandra Bhan Verma; M. A. Quraishi; E. E. Ebenso

doi:10.1016/s1452-3981(23)08185-3

Application of some oligopolymers as effective corrosion inhibitors for mild steel in 1M HCl: Gravimetric, thermodynamic and electrochemical analysis

Chandra Bhan Verma, M. A. Quraishi^*, E. E. Ebenso

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Three oligopolymers derived from α-Naphthol (N), formaldehyde (F) with aniline (TERP-1), para-aminobenzoic acid (TERP-2) and sulphanilic acid (TER-3) were synthesized and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, linear polarization and gravimetric methods. The values of activation energy (E_a) and some thermodynamic parameters were calculated to describe the mechanism of adsorption. The inhibition efficiency of the all three inhibitors followed the order TERP-3 > TERP-2 > TERP-1. The potentiodynamic polarization studies reveal that investigated polymers are mixed type inhibitors. Out of three polymers, TERP-3 exhibited the best inhibition efficiency (95% at 50 ppm).

Original language	English
Pages (from-to)	5507-5519
Number of pages	13
Journal	International Journal of Electrochemical Science
Volume	9
Issue number	10
DOIs	https://doi.org/10.1016/s1452-3981(23)08185-3
State	Published - Oct 2014
Externally published	Yes

Keywords

Acid corrosion
EIS
Mild steel
Oligopolymers
Thermodynamic parameters

ASJC Scopus subject areas

Electrochemistry

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10.1016/s1452-3981(23)08185-3

Cite this

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title = "Application of some oligopolymers as effective corrosion inhibitors for mild steel in 1M HCl: Gravimetric, thermodynamic and electrochemical analysis",

abstract = "Three oligopolymers derived from α-Naphthol (N), formaldehyde (F) with aniline (TERP-1), para-aminobenzoic acid (TERP-2) and sulphanilic acid (TER-3) were synthesized and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, linear polarization and gravimetric methods. The values of activation energy (Ea) and some thermodynamic parameters were calculated to describe the mechanism of adsorption. The inhibition efficiency of the all three inhibitors followed the order TERP-3 > TERP-2 > TERP-1. The potentiodynamic polarization studies reveal that investigated polymers are mixed type inhibitors. Out of three polymers, TERP-3 exhibited the best inhibition efficiency (95\% at 50 ppm).",

keywords = "Acid corrosion, EIS, Mild steel, Oligopolymers, Thermodynamic parameters",

author = "Verma, \{Chandra Bhan\} and Quraishi, \{M. A.\} and Ebenso, \{E. E.\}",

year = "2014",

month = oct,

doi = "10.1016/s1452-3981(23)08185-3",

language = "English",

volume = "9",

pages = "5507--5519",

journal = "International Journal of Electrochemical Science",

issn = "1452-3981",

publisher = "Elsevier B.V.",

number = "10",

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TY - JOUR

T1 - Application of some oligopolymers as effective corrosion inhibitors for mild steel in 1M HCl

T2 - Gravimetric, thermodynamic and electrochemical analysis

AU - Verma, Chandra Bhan

AU - Quraishi, M. A.

AU - Ebenso, E. E.

PY - 2014/10

Y1 - 2014/10

N2 - Three oligopolymers derived from α-Naphthol (N), formaldehyde (F) with aniline (TERP-1), para-aminobenzoic acid (TERP-2) and sulphanilic acid (TER-3) were synthesized and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, linear polarization and gravimetric methods. The values of activation energy (Ea) and some thermodynamic parameters were calculated to describe the mechanism of adsorption. The inhibition efficiency of the all three inhibitors followed the order TERP-3 > TERP-2 > TERP-1. The potentiodynamic polarization studies reveal that investigated polymers are mixed type inhibitors. Out of three polymers, TERP-3 exhibited the best inhibition efficiency (95% at 50 ppm).

AB - Three oligopolymers derived from α-Naphthol (N), formaldehyde (F) with aniline (TERP-1), para-aminobenzoic acid (TERP-2) and sulphanilic acid (TER-3) were synthesized and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, linear polarization and gravimetric methods. The values of activation energy (Ea) and some thermodynamic parameters were calculated to describe the mechanism of adsorption. The inhibition efficiency of the all three inhibitors followed the order TERP-3 > TERP-2 > TERP-1. The potentiodynamic polarization studies reveal that investigated polymers are mixed type inhibitors. Out of three polymers, TERP-3 exhibited the best inhibition efficiency (95% at 50 ppm).

KW - Acid corrosion

KW - EIS

KW - Mild steel

KW - Oligopolymers

KW - Thermodynamic parameters

UR - https://www.scopus.com/pages/publications/84906896667

U2 - 10.1016/s1452-3981(23)08185-3

DO - 10.1016/s1452-3981(23)08185-3

M3 - Article

AN - SCOPUS:84906896667

SN - 1452-3981

VL - 9

SP - 5507

EP - 5519

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

IS - 10

ER -

Application of some oligopolymers as effective corrosion inhibitors for mild steel in 1M HCl: Gravimetric, thermodynamic and electrochemical analysis

Abstract

Keywords

ASJC Scopus subject areas

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