Conducting polyaniline based paints on low carbon steel for corrosion protection

Abstract

Conducting polyaniline powder was synthesized chemically and paints containing conducting polyaniline powder were applied on low carbon steel samples. The conducting polyaniline powder was char acterized by UV-Visible absorption spectroscopy and the morphology of paint coating on low carbon steel was studied by scanning electron microscopy. The corrosion protection performance of the coating was eval uated by using potentiodynamic polarization techniques and electrochemical impedance spectroscopy. It has been found that the 2 wt % polyaniline-hydrochloric acid based paint coating offers maximum corrosion protection to low carbon steel in chloride medium.

Electrochemical Investigations on Semi-conducting Properties of a Passive Film on Conducting Polypyrrole Coated Low Carbon Steel in a Simulated Concrete Pore Solution

“…Conducting polypyrrole was synthesized by the method adapted by V. Truong et al [9], and conducting polypyrrole based paints were prepared by the method described by P. Deshpande et al [10], and elaborated as follows. Conducting polypyrrole (2 g) as a pigment, 12 g of Xylene, 8 g of titanium dioxide (TiO2) and 8 g of bis-(2-ethylhexyl) phthalate (dioctyl phthalate: DOP) were added to the solution with 70 g of epoxy resin (GY 250 supplied by Huntsman Advanced Materials (India) Pvt Ltd. Andheri (East), Mumbai-400093, India).…”

Conducting Polypyrrole Coated Rebar in a Carbonated Concrete Pore Solution: Electrochemical Investigations

“…Conducting polypyrrole was synthesized by the method adapted by V. Truong et al [13]. Conducting polypyrrole based paints were prepared by the method described by P. Deshpande et al [14], and elaborated as follows: 2 g of conducting polypyrrole as a pigment, 12 g of xylene, 8 g of titanium dioxide (TiO2) and 8 g of bis-(2-ethylhexyl) phthalate (dioctyl phthalate: DOP) were added to 70 g of the epoxy resin solution (Araldite GY 250 supplied by Huntsman Advanced Materials Pvt Ltd. Andheri (East), Mumbai-400 093, India). Araldite GY 250 is a universal purpose unmodified medium viscous epoxy resin based on Bisphenol A.…”

The effect of composition of a polymeric coating on the biofilm formation of bacteria and filamentous fungi

“…The most extensively studied CPs are polyaniline, polypyrrole, and poly(p-phenylenediamine), which have been applied with success in certain applications e.g. active anti-corrosion agent for metallic materials by means of organic polymeric coatings [20,21,22]. Composite pigments combining the pigment (core) covered with a CP layer (shell), may eventually supersede toxic pigments containing lead or hexavalent chromium [23].…”