Synthesis of Poly (Aniline-Co-O-Anisidine) Film in Electrolyte Mixture and Its Anticorrosion Behavior
Natural and Engineering Sciences, vol.6, no.3, pp.197-207, 2021 (Scopus)
- Publication Type: Article / Article
- Volume: 6 Issue: 3
- Publication Date: 2021
- Doi Number: 10.28978/nesciences.1036850
- Journal Name: Natural and Engineering Sciences
- Journal Indexes: Scopus
- Page Numbers: pp.197-207
- Keywords: copolymer, copper, Corrosion, electrolyte solution, impedance spectroscopy, monolayer
- Open Archive Collection: AVESIS Open Access Collection
- Hatay Mustafa Kemal University Affiliated: Yes
Abstract
Poly (aniline-co-o-anisidine) of copolymer coating was synthesized on copper surface (Cu) in an aqueous solution containing 90 ml of 0.20 M NaOX + 10 ml of 0.20 M oxalic acid. The copper substrate in NaOX solution containing oxalic acid had a fairly reliable passive surface mainly due to the formation of copper (II) oxalate layer. The addition of oxalic acid to working electrolyte contributed to both the amount of copolymer deposition (growth) and that of copolymer coated per unit time of electropolymerization (growth rate). The corrosion performances of copolymer coatings were investigated in 3.5 % NaCl solution with anodic polarization curves and electrochemical impedance spectroscopy. The results showed that oxalic acid led to the diminishing of the permeability of copolymer film. The copolymer coating exhibited an effective barrier property on copper electrode and provided a remarkable anodic protection to substrate for longer exposure time.