Inhibition of mild steel corrosion in acidic medium using synthetic and naturally occurring polymers and synergistic halide additives

By S. Umoren, O. Ogbobe, I. Igwe, E. Ebenso. 2008

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Green Inhibitors for Corrosion of Metals: A Review (2012, background): “Umoren et al reported the inhibition potential of CMC for sulphuric acid corrosion of mild steel [61, 62] and also the effects of synergism and antagonism of halide ions with CMC on corrosion inhibition.”
Green Inhibitors for Corrosion Protection of Metals and Alloys: An Overview (2012, background): “[14], studied the corrosion inhibition of mild steel in H2SO4 in the presence of gum arabic (GA) (naturally occurring polymer) and polyethylene glycol (PEG) (synthetic polymer).”
Synergistic inhibition effect of potassium iodide and novel Schiff bases on X65 steel corrosion in 0.5 M H2SO4 (2013, background): “This can be explained by the strong chemisorption of iodide ions on the metal surface [56].”
Synergistic and antagonistic effects between halide ions and carboxymethyl cellulose for the corrosion inhibition of mild steel in sulphuric acid solution (2010, background): “Influence of halide ions on corrosion inhibition of metals using synthetic polymers have been reported (Larabi et al. 2004; Umoren and Ebenso 2007; Jeyaprabha et al. 2005; Umoren et al. 2006b, 2008a) but the effect with naturally occurring polymers have not been investigated although we have reporte”
Inhibition of the corrosion of steel in HCl, H2SO4 solutions by bamboo leaf extract (2012, background): “Moreover, the lesser interference of SO4(2) ions with the adsorbed protonated cations may lead to lower adsorption [60].”