Inhibition of carbon steel corrosion by polyvinylpyrrolidone in chloride-acetate solution and in model strattal water

Keywords

environment friendly inhibitors, polyvinylpyrrolidone, corrosion rate, degree of protection, gravimetric and polarization studies.

Cite as

Slobodyan Z. V., Mahlatiuk L. A., Kupovych R. B., and Sobodosh N. Yo. Inhibition of carbon steel corrosion by polyvinylpyrrolidone in chloride-acetate solution and in model strattal water. Physicochemical Mechanics of Materials. 2023. 59(2), 117-122.

https://doi.org/10.15407/pcmm2023.02.117

Abstract

The influence of polyvinylpyrrolidone (PVP) with molecular mass of 12600 and 28000 at concentrations of 0.2; 0.5 and 1 g/dm³ on the corrosion rate of 20 steel in the chloride-ace­tate solution and in the model reservoir water was investigated by gravimetric and electro­chemical methods. Under dynamic conditions maximum inhibition of the steel corrosion rate is observed at a PVP concentration of 0.5 g/dm³ in both media. A further increase in inhibitor concentration to 1 g/dm³ reduces the degree of protection more significantly in chloride-acetate solution than in the reservoir water. The PVP with a higher molecular mass exhibits higher protective properties, which is typical of polymers capable of adsor­bing both linearly and in a ball.

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