Protective Behavior of Poly(m-aminophenol) and Polypyrrole Coatings on Mild Steel

• Main Authors: Bonnia, N.N (Author), Harun, M.K (Author), Ratim, S. (Author), Rosmamuhamadani, R. (Author), Yahaya, S.M (Author)
• Format: Article
• Language: English
• Published: Institute of Physics Publishing 2018
• Subjects: Anodic protection; Carbon steel; Cathodic protection; Chlorine compounds; Coatings; Corrosion; Corrosion performance; Corrosion protection; Cyclic voltammetry; Energy dispersive X ray analyzer; Manufacture; Mild steel substrates; NaCl aqueous solution; Organic solvents; Oxalic acid; Oxalic acid solution; Polarization curves; Poly(m-aminophenol); Polymer films; Polypyrrole coatings; Polypyrroles; Scanning electron microscopy; Sodium chloride; Sodium hydroxide; Solutions; Steel
• Online Access: View Fulltext in Publisher; View in Scopus

 Electrodeposition of polypyrrole (PPy) and poly (m-aminophenol) (PMAP) films on mild steel (MS) substrate was achieved in 0.3M oxalic acid solution and 0.3M NaOH, water:ethanol (70:30) solvent respectively using cyclic voltammetry technique. The morphology of the films constructed was determined by scanning electron microscope (SEM) while energy dispersive X-Ray analyzer (EDX) was used to establish the presence of organic PMAP and PPy film coating and its compositions. The corrosion performance of MS coated with both polymer films were investigated after 0.5 hours immersed in 0.5M NaCl aqueous solution by using polarization curves. It was found that PPy coating provides anodic protection while PMAP coating provides cathodic protection towards corrosion protection of mild steel substrate. © Published under licence by IOP Publishing Ltd.