Performance of two new epoxy resins as potential corrosion inhibitors for carbon steel in 1MHCl medium: Combining experimental and computational approaches

El-Aouni, Naoual; Hsissou, Rachid; Safi, Zaki; Abbout, Said; Benhiba, F.; Azzaoui, Jalila El; Haldhar, Rajesh; Wazzan, Nuha; Guo, Lei; Erramli, Hamid; Bachiri, Abderrahim El; Rafik, Mohamed

doi:10.1016/j.colsurfa.2021.127066

Cited by 64 publications

(15 citation statements)

References 79 publications

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“…Then, EIS results were subsequently fitted from an equivalent circuit comprising the constant phase element (CPE), the solution resistance (R s ) and the charge transfer resistance (R ct ), as displayed in Figure 4 . The EIS parameters are listed in Table 2 , and the analysis of the results reflected an important increase in the values of charge transfer resistance from 34.81 to 210.2 Ω cm 2 for 1 M HCl alone and with the 10 −3 M of TGP epoxy prepolymer, respectively, showing the highest charge transfer resistance through the tested inhibitor at the MS/electrolyte interface [ 17 ]. In addition, the highest charge transfer resistancevalues, as shown in Table 2 , confirmed the inhibitory efficiency of the epoxy prepolymer in the corrosion inhibition of metallic surfaces in 1 M HCl solution.…”

Section: Resultsmentioning

confidence: 99%

“…Epoxy prepolymer compounds have been investigated as excellent corrosion inhibitors because of their ability to adsorb readily to ametallic surface [ 12 , 13 , 14 ]. This class of epoxy prepolymer molecules has been investigated as corrosion inhibitors because of its synthesis by the condensation reaction of epichlorohydrin with compounds having mobile hydrogen in the presence of sodium hydroxide (NaOH) as the basis [ 15 , 16 , 17 ]. The presence of an oxirane group, carbonyl compounds and oxygen heteroatoms enables it to cooperate with an iron surface, facilitating the adsorption of epoxy prepolymer on the metallic area and acting as a corrosion inhibitor [ 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

et al. 2022

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Anticorrosive protection efficiency of novel tetrafunctional epoxy prepolymer, namely 2,3,4,5-tetraglycidyloxy pentanal (TGP), for mild steel in 1 M HCl medium was assessed through potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), contact angle (CA), adsorption isotherm model, temperature effect and thermodynamic parameters. The synthesized TGP was characterized and confirmed by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR). The inhibitory efficiencies found at lower concentration of the prepolymer TGP were85% (PDP) and 87.17% (EIS). PDP measurement illustrated that the TGP behaved as a mixed-type inhibitor in the realized solution. SEM and EDS analysis showeda significant decrease in the corrosion of the MS surface in the presence of the inhibitory prepolymer compared with the blank (1 M HCl). Langmuir adsorption isotherm is the most acceptable modelto describe the TGP epoxy prepolymer on the MS area.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

et al. 2022

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“…The PDP was conducted at a scan rate of 1 mV/s in the vicinity of 1200 mV vs. OCP. The impedance measurements were conducted with an equal amplitude (10 mV) in the frequency range of 100 kHz to 0.1 Hz at room temperature [ 19 , 20 , 21 ]. Nyquist and Bode graphs were used to assess the findings’ corrosion performance.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Bio-Based Polybenzoxazine and Its Antibiofilm and Anticorrosive Activities

et al. 2023

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Candida albicans are highly widespread pathogenic fungi in humans. Moreover, its developed biofilm causes serious clinical problems, leading to drug failure caused by its inherent drug tolerance. Hence, the inhibition of biofilm formation and virulence characteristics provide other means of addressing infections. Polymer composites (PCs) derived from natural products have attracted increasing interest in the scientific community, including antimicrobial applications. PCs are a good alternative approach to solving this challenge because of their excellent penetration power inside biofilms. The main objectives of this study were to synthesize a novel curcumin-based polybenzoxazine polymer composite (poly(Cu-A) PC) using Mannich condensation reaction and evaluate their potency as an antibiofilm and anticorrosive candidate against C. albicans. In addition, their anticorrosive efficacy was also explored. PC exhibited significant antibiofilm efficacy versus C. albicans DAY185 by the morphologic changing of yeast to hyphae, and>90% anticorrosive efficacy was observed at a higher dose of PC. These prepared PC were safe in vivo against Caenorhabditis elegans and Raphanus raphanistrum. The study shows that a polybenzoxazine polymer composite has the potential for controlling biofilm-associated fungal infections and virulence by C. albicans, and opens a new avenue for designing PCs as antifungal, anticorrosive agents for biofilm-associated fungal infections and industrial remediation.

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“…Inhibitors are one of the most-used methods of delaying the corrosion process due to their ease of application, availability, and cost effectiveness. These inhibitors include organic, inorganic, and natural products or eco-friendly materials ( Finšgar and Jackson, 2014 ; El-Aouni et al, 2021 ; Hsissou et al, 2022a ).…”

Section: Introductionmentioning

confidence: 99%

Inhibition of corrosion on API 5L X52 pipeline steel in acid media by Tradescantia spathacea

Rodríguez-Torres,

Valladares-Cisneros,

Chávez-Díaz

et al. 2024

Front. Chem.

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The concentration effect of Tradescantia spathacea (T. spathacea) as corrosion inhibitor of API 5L X52 steel in 0.5 M of H2SO4 was studied here through electrochemical and gravimetric techniques. To achieve it, samples of the material were prepared to be submitted to each of the tests. Results from electrochemical impedance spectroscopy (EIS) showed that there was an optimum concentration of the inhibitor in which is reached the maximum inhibition efficiency, displaying the best inhibition characteristics for this system with a maximum inhibition of 89% by using 400 ppm. However, the efficiency decreased until 40% when the temperature was increased to 60°C. Potentiodynamic polarization curves (PDP) revealed that some of the present compounds of T. spathacea may affect anodic and cathodic process, so it can be classified as a mix-type corrosion inhibitor for API 5L X52 in sulfuric acid. Also, this compound followed an adsorption mechanism; this can be described through a Frumkin isotherm with an adsorption standard free energy difference (ΔG°) of −56.59 kJmol−1. Metal surface was studied through scanning electron microscope, results revealed that by adding inhibitor, the metal surface is protected; also, they evidenced low damages compared with the surface with no inhibitor. Finally, Tradescantia spathacea inhibited the corrosion process with 82% efficiency.

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Performance of two new epoxy resins as potential corrosion inhibitors for carbon steel in 1MHCl medium: Combining experimental and computational approaches

Cited by 64 publications

References 79 publications

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

Synthesis of Bio-Based Polybenzoxazine and Its Antibiofilm and Anticorrosive Activities

Inhibition of corrosion on API 5L X52 pipeline steel in acid media by Tradescantia spathacea

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