Polyvinylpyrollidone and polyacrylamide as corrosion inhibitors for mild steel in acidic medium

S. A. Umoren; I. B. Obot

doi:10.1142/S0218625X08011366

Polyvinylpyrollidone and polyacrylamide as corrosion inhibitors for mild steel in acidic medium

S. A. Umoren, I. B. Obot

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

85 Scopus citations

Abstract

The corrosion inhibition of mild steel in 1 M H"2SO"4 in the presence of polyvinylpyrollidone (PVP) and polyacrylamide (PA) as inhibitors at 3060°C was studied using gravimetric and gasometric techniques. The inhibition efficiency (1%) increased with increase in concentration of the inhibitors. Increase in temperature increased the corrosion rate in the absence and presence of inhibitors but decreased the inhibition efficiency. Both PVP and PA were found to obey Temkin adsorption isotherm and Kinetic-Thermodynamic Model of El-Awady at all the concentrations and temperatures studied. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Thermodynamic parameters reveal that the adsorption process is spontaneous. PVP was found to be a better inhibitor than PA.

Original language	English
Pages (from-to)	277-286
Number of pages	10
Journal	Surface Review and Letters
Volume	15
Issue number	3
DOIs	https://doi.org/10.1142/S0218625X08011366
State	Published - Jun 2008
Externally published	Yes

Keywords

Adsorption isotherm
Corrosion inhibition
Mild steel
Polyacrylamide
Polyvinylpyrollidone

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1142/S0218625X08011366

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title = "Polyvinylpyrollidone and polyacrylamide as corrosion inhibitors for mild steel in acidic medium",

abstract = "The corrosion inhibition of mild steel in 1 M H{"}2SO{"}4 in the presence of polyvinylpyrollidone (PVP) and polyacrylamide (PA) as inhibitors at 3060°C was studied using gravimetric and gasometric techniques. The inhibition efficiency (1\%) increased with increase in concentration of the inhibitors. Increase in temperature increased the corrosion rate in the absence and presence of inhibitors but decreased the inhibition efficiency. Both PVP and PA were found to obey Temkin adsorption isotherm and Kinetic-Thermodynamic Model of El-Awady at all the concentrations and temperatures studied. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Thermodynamic parameters reveal that the adsorption process is spontaneous. PVP was found to be a better inhibitor than PA.",

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year = "2008",

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doi = "10.1142/S0218625X08011366",

language = "English",

volume = "15",

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TY - JOUR

T1 - Polyvinylpyrollidone and polyacrylamide as corrosion inhibitors for mild steel in acidic medium

AU - Umoren, S. A.

AU - Obot, I. B.

PY - 2008/6

Y1 - 2008/6

N2 - The corrosion inhibition of mild steel in 1 M H"2SO"4 in the presence of polyvinylpyrollidone (PVP) and polyacrylamide (PA) as inhibitors at 3060°C was studied using gravimetric and gasometric techniques. The inhibition efficiency (1%) increased with increase in concentration of the inhibitors. Increase in temperature increased the corrosion rate in the absence and presence of inhibitors but decreased the inhibition efficiency. Both PVP and PA were found to obey Temkin adsorption isotherm and Kinetic-Thermodynamic Model of El-Awady at all the concentrations and temperatures studied. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Thermodynamic parameters reveal that the adsorption process is spontaneous. PVP was found to be a better inhibitor than PA.

AB - The corrosion inhibition of mild steel in 1 M H"2SO"4 in the presence of polyvinylpyrollidone (PVP) and polyacrylamide (PA) as inhibitors at 3060°C was studied using gravimetric and gasometric techniques. The inhibition efficiency (1%) increased with increase in concentration of the inhibitors. Increase in temperature increased the corrosion rate in the absence and presence of inhibitors but decreased the inhibition efficiency. Both PVP and PA were found to obey Temkin adsorption isotherm and Kinetic-Thermodynamic Model of El-Awady at all the concentrations and temperatures studied. Phenomenon of physical adsorption is proposed from the activation parameters obtained. Thermodynamic parameters reveal that the adsorption process is spontaneous. PVP was found to be a better inhibitor than PA.

KW - Adsorption isotherm

KW - Corrosion inhibition

KW - Mild steel

KW - Polyacrylamide

KW - Polyvinylpyrollidone

UR - https://www.scopus.com/pages/publications/43949107524

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DO - 10.1142/S0218625X08011366

M3 - Article

AN - SCOPUS:43949107524

SN - 0218-625X

VL - 15

SP - 277

EP - 286

JO - Surface Review and Letters

JF - Surface Review and Letters

IS - 3

ER -

Polyvinylpyrollidone and polyacrylamide as corrosion inhibitors for mild steel in acidic medium

Abstract

Keywords

ASJC Scopus subject areas

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