Poly(o-phenylenediamine) as an inhibitor of mild steel corrosion in HCl solution

Rehim, Sayed S. Abd El; Sayyah, S. M.; El-Deeb, M. M.; Kamal, S. M.; Azooz, R. E.

doi:10.1016/j.matchemphys.2010.02.069

Cited by 65 publications

(22 citation statements)

References 20 publications

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“…As can be seen from Table 7 the calculated K ads and DG 0 ads results are decreased with increasing temperature. This behavior is explained by the fact that the adsorption is somewhat unfavorable with increasing experimental temperature, indicating an intermediate case with the possibility of both physical and chemical adsorption [14] .…”

Section: Resultsmentioning

confidence: 97%

“…Many mechanisms have been used to explain the action of inorganic inhibitors such as chromates and nitrate as well as organic ones. The primary step in the mechanism of inhibitors in acid solutions is generally accepted as the adsorption of the inhibiting species on to the metal surface [14] , which could occur in parallel with aggressive species like Cl À where present [15] .…”

Section: Introductionmentioning

confidence: 99%

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Corrosion of AISI 4130 Steel Alloy under Hydrodynamic Condition in Ethylene Glycol + Water + NO2− Solution

Danaee

Khomami

Attar

2013

Journal of Materials Science & Technology

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Corrosion of AISI 4130 Steel Alloy under Hydrodynamic Condition in Ethylene Glycol + Water + NO2− Solution

Danaee

Khomami

Attar

2013

Journal of Materials Science & Technology

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“…It was found that the nanogel particles act as mixed inhibitors and their mode of adsorption on the metal surface fit well into Langmuir adsorption isotherm. The inhibition properties of the electro-prepared Poly (o-phenylenediamine), P(oPD), on the corrosion rate of mild steel (MS) in HCl solutions have been investigated under different experimental conditions using weight loss and potentiodynamic polarization techniques [42]. The data obtained from the two techniques showed that the presence of P(oPD) in the acid solutions suppresses the corrosion rate of MS indicating that the polymer acts as corrosion inhibitor.…”

Section: Synthetic Polymers As Corrosion Inhibitors Of Mild Steelmentioning

confidence: 99%

Recent Developments on the Use of Polymers as Corrosion Inhibitors - A Review

Umoren

Solomon²

2014

TOMSJ

114

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Abstract:The use of corrosion inhibitors is the one the most economical and practical means of controlling metallic corrosion in different corrosive media. Interest on the use of eco-friendly organic compounds as corrosion inhibitors has extended to the use of polymers to inhibit metallic corrosion. The use of polymers as corrosion inhibitors has attracted attention and has gained wide acceptance in recent times. This has been attributed to a number of factors namely: (i) they are low cost and stable to metallic materials in acid media, (ii) they possess multiple adsorption sites, (iii) through their functional groups, they form complexes with metal ions and on the metal surface these complexes occupy a large area, thereby blanketing the surface and protecting the metal from corrosive agents present in the solution. A number of synthetic and natural polymers as metallic corrosion inhibitors have been investigated and reported. As an update to previous review work on the use of polymers as corrosion inhibitors, the present review presents most of the contributions made to the literature on the use of polymers as corrosion inhibitors of diverse metals in different corrosive media in the last four (2010)(2011)(2012)(2013) years.

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“…[1][2][3] A number of synthetic and natural occurring polymers have been reported to inhibit the corrosion mild steel in acidic media. [4][5][6][7][8][9][10][11][12][13] Polyvinyl alcohol (PVA) is a water-soluble synthetic polymer. It has excellent film forming, emulsifying, and adhesive properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of Molecular Weight on Mild Steel Corrosion Inhibition Effect by Polyvinyl Alcohol in Hydrochloric Acid Solution

Umoren

Gasem

2014

Journal of Dispersion Science and Technology

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GRAPHICAL ABSTRACTThe corrosion inhibition of mild steel in hydrochloric acid solution in the presence of three different molecular weights of polyvinyl alcohol (PVA) designated as PVA-I, PVA-II, and PVA-III corresponding to 14,000, 72,000, and 125,000 g mol À1 , respectively, was investigated using electrochemical impedance spectroscopy, linear polarization resistance (LPR), and potentiodynamic polarization techniques at 25 C. It was found that PVA of different molecular weights inhibited the corrosion of mild steel in the acid environment. Inhibition efficiency (g%) increases with increase in concentration of the polymers. LPR measurements clearly show that inhibition efficiency increases with increasing molecular weight in the order PVA-III > PVA-II > PVA-I. Polarization curves indicate that PVA functions as a mixed inhibitor affecting both the anodic metal dissolution and cathodic hydrogen evolution partial reactions of the corrosion process. The experimental data obtained fitted well into Langmuir adsorption isotherm model. Physical adsorption mechanism is proposed from the thermodynamic (free energy of adsorption) parameters obtained.

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Poly(o-phenylenediamine) as an inhibitor of mild steel corrosion in HCl solution

Cited by 65 publications

References 20 publications

Corrosion of AISI 4130 Steel Alloy under Hydrodynamic Condition in Ethylene Glycol + Water + NO2− Solution

Corrosion of AISI 4130 Steel Alloy under Hydrodynamic Condition in Ethylene Glycol + Water + NO2− Solution

Recent Developments on the Use of Polymers as Corrosion Inhibitors - A Review

Influence of Molecular Weight on Mild Steel Corrosion Inhibition Effect by Polyvinyl Alcohol in Hydrochloric Acid Solution

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