Prevention of corrosion of iron in acidic media using poly (o-methoxy-aniline)

✍ Scribed by S. Sathiyanarayanan; K. Balakrishnan; S.K. Dhawan; D.C. Trivedi

• Book ID: 103065918
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 612 KB
• Volume: 39
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(94)80032-4

✦ Synopsis

The inhibitive action of ortho-methoxy substituted polyaniline, a new class of conducting polymer, on the corrosion of iron in acidic chloride solution has been evaluated by Electrochemical Impedance Spectroscopy (EIS), Linear Polarization Resistance (LPR), Weight Loss (WL) and by the Logarithmic Polarization Technique (LPT). Inhibition efficiencies of nearly 8048% have been observed even at 25 ppm concentration. Double-layer capacitance studies indicate a strong adsorption of polymer following the Temkin adsorption isotherm is largely responsible for its inhibitive action.