Synergistic effect of halide ions on the corrosion inhibition of aluminum in acidic medium by some polymers

E. E. Ebenso; U. J. Ekpe; S. A. Umoren; Ekerete Jackson; O. K. Abiola; N. C. Oforka

doi:10.1002/app.23505

Synergistic effect of halide ions on the corrosion inhibition of aluminum in acidic medium by some polymers

E. E. Ebenso^*, U. J. Ekpe, S. A. Umoren, Ekerete Jackson, O. K. Abiola, N. C. Oforka

^*Corresponding author for this work

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

56 Scopus citations

Abstract

The corrosion inhibition of aluminum in H₂SO₄ in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of addition of halides (KCl, KBr, KI) was studied using the hydrogen evolution technique at 30 and 40°C. Inhibition efficiency (%I) increases with concentration of PVA and PEG - but with PEG having higher %I. The %I decrease with increase in temperature from 30 to 40°C in the absence and presence of inhibitor and halides. PVA and PEG were found to obey Freundlish adsorption isotherm. Phenomenon of physical adsorption is proposed from the obtained E _a, AG_ads, and Q_ads values obtained. The synergism parameters (S_I) obtained were found to be greater than unity for both PVA and PEG, which indicates that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

Original language	English
Pages (from-to)	2889-2894
Number of pages	6
Journal	Journal of Applied Polymer Science
Volume	100
Issue number	4
DOIs	https://doi.org/10.1002/app.23505
State	Published - 15 May 2006
Externally published	Yes

Keywords

Acid
Aluminum
Corrosion inhibition
Halide ions
Polymers
Synergism

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/app.23505

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title = "Synergistic effect of halide ions on the corrosion inhibition of aluminum in acidic medium by some polymers",

abstract = "The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of addition of halides (KCl, KBr, KI) was studied using the hydrogen evolution technique at 30 and 40°C. Inhibition efficiency (%I) increases with concentration of PVA and PEG - but with PEG having higher %I. The %I decrease with increase in temperature from 30 to 40°C in the absence and presence of inhibitor and halides. PVA and PEG were found to obey Freundlish adsorption isotherm. Phenomenon of physical adsorption is proposed from the obtained E a, AGads, and Qads values obtained. The synergism parameters (SI) obtained were found to be greater than unity for both PVA and PEG, which indicates that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.",

keywords = "Acid, Aluminum, Corrosion inhibition, Halide ions, Polymers, Synergism",

author = "Ebenso, {E. E.} and Ekpe, {U. J.} and Umoren, {S. A.} and Ekerete Jackson and Abiola, {O. K.} and Oforka, {N. C.}",

year = "2006",

month = may,

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doi = "10.1002/app.23505",

language = "English",

volume = "100",

pages = "2889--2894",

journal = "Journal of Applied Polymer Science",

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T1 - Synergistic effect of halide ions on the corrosion inhibition of aluminum in acidic medium by some polymers

AU - Ebenso, E. E.

AU - Ekpe, U. J.

AU - Umoren, S. A.

AU - Jackson, Ekerete

AU - Abiola, O. K.

AU - Oforka, N. C.

PY - 2006/5/15

Y1 - 2006/5/15

N2 - The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of addition of halides (KCl, KBr, KI) was studied using the hydrogen evolution technique at 30 and 40°C. Inhibition efficiency (%I) increases with concentration of PVA and PEG - but with PEG having higher %I. The %I decrease with increase in temperature from 30 to 40°C in the absence and presence of inhibitor and halides. PVA and PEG were found to obey Freundlish adsorption isotherm. Phenomenon of physical adsorption is proposed from the obtained E a, AGads, and Qads values obtained. The synergism parameters (SI) obtained were found to be greater than unity for both PVA and PEG, which indicates that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

AB - The corrosion inhibition of aluminum in H2SO4 in the presence of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) and the effect of addition of halides (KCl, KBr, KI) was studied using the hydrogen evolution technique at 30 and 40°C. Inhibition efficiency (%I) increases with concentration of PVA and PEG - but with PEG having higher %I. The %I decrease with increase in temperature from 30 to 40°C in the absence and presence of inhibitor and halides. PVA and PEG were found to obey Freundlish adsorption isotherm. Phenomenon of physical adsorption is proposed from the obtained E a, AGads, and Qads values obtained. The synergism parameters (SI) obtained were found to be greater than unity for both PVA and PEG, which indicates that the enhanced inhibition efficiency caused by the addition of halides is only due to synergism.

KW - Acid

KW - Aluminum

KW - Corrosion inhibition

KW - Halide ions

KW - Polymers

KW - Synergism

UR - http://www.scopus.com/inward/record.url?scp=33645775287&partnerID=8YFLogxK

U2 - 10.1002/app.23505

DO - 10.1002/app.23505

M3 - Article

AN - SCOPUS:33645775287

SN - 0021-8995

VL - 100

SP - 2889

EP - 2894

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 4

ER -

Synergistic effect of halide ions on the corrosion inhibition of aluminum in acidic medium by some polymers

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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