To obtain a fundamental information about the mechanism of corrosion inhibition for mild steel by polyacrylic acid systems in cooling water systems, the effects of a simple model, i, e., a mixture system composed of polyacrylic acid and polyacrylamide (PAA/PAAm), on the corrosion of mild steel was investigated. Results indicated that the mixture system effectively inhibits corrosion. This effectiveness is attributed to the formation of polymer-polymer complex (PPC) and its action.
