In situ synthesis of one eco‐friendly polyacrylic acid/zinc colloidal particles doped polyacrylic acid as an efficient corrosion inhibitor for iron

Abstract Commonly used organic inhibitors face one common problem: Environmental friendliness and excellent inhibition efficiency cannot be simultaneously realized. Here, we report one facile method that can be used for the in situ synthesis of one stable polyacrylic acid/zinc colloidal particles (PZCPs) doped polyacrylic acid (PAA) through the electrostatic interaction between polyacrylic acid and Zn 2+ as a corrosion inhibitor of iron. The results of microstructure characterization indicated that the diameter of the colloidal particles was around 150 nm. The various electrochemical experimental results indicated that PZCPs doped PAA exhibited excellent inhibition efficiency, and the maximum inhibition efficiency was 82.3%. The PZCPs doped PAA exhibited higher inhibition efficiency than PAA because the adsorption ability of PZCPs doped PAA was stronger than that of PAA and the formed PZCPs doped PAA inhibition layer on the iron surface was thicker and denser than the PAA inhibition layer. Given the eco‐friendly, facile synthesis, excellent inhibition efficiency, and low price, this strategy to synthesize effective inhibitors will find widespread application in the anti‐corrosion industry.