Sulfonated Hydroxyquinoline/Zinc- Doped Polyaniline: A FormidableAnticorrosion and Self-Healing Nanopigment

One of the most effective ways to enhance the corrosion resistance of metals is by incorporatingcorrosion inhibitors into a polymeric matrix. In this study, we introduce a self-healing anticorrosivecoating based on a novel nanocomposite containing ۸-hydroxyquinoline-۵-sulfonic acid/zinc-dopedpolyaniline (PA-HZ) within an epoxy matrix. Fourier transform infrared spectroscopy was employedto analyze the chemical structure of the synthesized anticorrosive pigment. To assess the corrosionresistance of the PA-HZ nanocomposite, electrochemical impedance spectroscopy was conducted.After ۴۰ days of immersion in a ۳.۵ wt% NaCl solution, the impedance modulus of the PA-HZ/epoxycoating was ۶۸ times higher than that of the pure epoxy coating, demonstrating the robust protectiveeffect of the PA-HZ/epoxy coating.

کلیدواژه ها:

Coating ، Anticorrosion ، Polyaniline ، ۸-hydroxyquinoline-۵-sulfonic acid ، Zinc complex