Gravimetric, electrochemical and theoretical study, and surface analysis of novel epoxy resin as corrosion inhibitor of carbon steel in 0.5 M H2SO4 solution

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

“…According to the data displayed in Table 1 , careful analysis of the anodic and cathodic Tafel slopes suggests that, with the addition of the TGP prepolymer, both slopes were changed compared to the 1 M HCl solution alone [ 32 ]. Additionally, the reaction mechanisms, both anodic and cathodic, for the unprotected and protected by different concentrations of the epoxy prepolymer were confirmed to be constant as the shape of the polarization curves remained the same, showingthat the epoxy prepolymer synthesized adsorbed on the metallic area through blocking the active centers [ 6 , 20 ].…”

“…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 ]. Damej et al studied N,N-1-tri(oxiran-2-ylmethoxy)-5-((oxiran-2-ylmethoxy)thio)-1H-1,2,4-triazole-3-amine as a potential corrosion inhibitor for steel in 1 M HCl solution and found ahigh inhibitory efficiency of 92% at lower concentration (1mM) [ 6 ].…”

Cucumber (Cucumis sativus L.) Leaf Extract as a Green Corrosion Inhibitor for Carbon Steel in Acidic Solution: Electrochemical, Functional and Molecular Analysis

“…From Table 5, the difference in electronegativity between the molecule and the metal is visible in comparing the value of X inh with that of Φ Fe ; thus, the influence of ∆E on the molecular adsorption properties should be considered [54]. Consequently, the global hardness parameter (H), closely related to ∆E, indicates the charge transfer resistance, which is directly proportional to the energy change, including both the charge transfer to the molecule and the back donation from the molecule [62,63]. This indicates the reactivity of the inhibitor molecule towards the adsorption on a metallic surface.…”

Mapping the Knowledge Domain of Corrosion Inhibition Studies of Ionic Liquids

“…In opposition to inorganic corrosion inhibitors, they may typically include carboxylic acid, surfactants, , Schiff bases, , ionic liquids, and others. Moreover, except for the single inorganic or organic corrosion inhibitors, scholars also developed compound corrosion inhibitors consisting of two or more types of corrosion inhibitors. − …”