The influence of polyvinylpyrrolidone (PVP) with molecular mass of 12 600 and 28 000 at concentrations of 0.2; 0.5 and 1.0 g/dm3 on the corrosion rate of 20 steel in the chloride-acetate solution and in the model stratal water was investigated by gravimetric and electrochemical methods. Under dynamic conditions maximum inhibition of the steel corrosion rate was observed at a PVP concentration of 0.5 g/dm3 in both environments. A further increase in inhibitor concentration to 1.0 g/dm3 reduces the degree of protection more significantly in chloride-acetate solution than in the stratal water. The PVP with a higher molecular mass reveals higher protective properties, which is typical of polymers capable of adsorbing both linearly and in a ball.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 59, No. 2, pp. 117–122, March–April, 2023.
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Slobodyan, Z.V., Mahlatiuk, L.A., Kupovych, R.B. et al. Inhibition of Carbon Steel Corrosion by Polyvinylpyrrolidone in Chloride-Acetate Solution and in Model Stratal Water. Mater Sci 59, 242–248 (2023). https://doi.org/10.1007/s11003-024-00769-8
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DOI: https://doi.org/10.1007/s11003-024-00769-8