Interaction of Polyaniline with Surface of Carbon Steel

Abstract

The structure and barrier properties of the oxyhydroxide layers on a carbon steel surface covered with electroactive polyaniline were investigated. Two types of polymer structure differing in degree of macromolecular order were prepared by simultaneous (fast polymerization) or dropwise (slow polymerization) mixing of reagents. A larger amount of the most stable FeOOH modification was formed on steel covered with slowly polymerized sample during treatment in the corrosion-active medium. Amorphous rust products with weak barrier properties were observed in the sample prepared by fast polymerization. Additionally, barrier activity of dedoped polyaniline was studied with SEM, WAXD, and electrochemical methods.

Corrosion Protective Coatings from Poly(heterocyclic diphenylamine): Polyaniline Analogues

“…The broad diffraction peaks between 5° and 30° seen in all the polyaniline and polyaniline analogues have been attributed to the periodicity parallel and perpendicular to the polyaniline chain in the polymers. ,, Figure S4 shows the diffracted PANI peaks with their corresponding d -spacing at 2θ = 9.5953° ( d = 9.2110 Å), 18.7119° ( d = 4.7383 Å), 23.4108° ( d = 3.7968 Å), and 40.2769° ( d = 2.2374 Å), as reported previously. ,,, PD1 shows 2 reflections at 2θ = 8.2475° and 20.2635° with corresponding interplanar distances of d = 10.7119 and 4.3789 Å. Overall, the polyaniline analogues gave similar diffraction patterns to PANI except for PD1 with a significantly lower peak in relation to PANI.…”

The concept, deposition routes, and applications of superhydrophobic surfaces – Review

“…The released heat can be used to monitor the course of the reaction. The success of aniline polymerization with oxidation agents is completed only in an acidic media in which aniline exists in the cation form [114].…”

PANi/PPy and PANi Films on ZnNi Alloy Coated Carbon Steel; Electrochemical Syntheses and Corrosion Performances

“…(Abd El-Lateef et al 2015;Bhat et al 2021;Chouia et al 2021;Ozyilmaz et al 2020;Tozar and Karahan 2014) Considering the literature studies in recent years, it is seen that conductive polymers are of interest in the field of corrosion protection due to their unique properties such as superior anticorrosive properties, redox reactions in natural environment and catalytic activity. For this aim, polyaniline and polypyrrole among conducting polymers are use for the corrosion protection of metals in a wide range of aggressive environments (Ates 2016;Kaliyannan et al 2020;Sokolova et al 2017).…”