A comparative study on the fabrication and assessment of anticorrosive marine coatings

Abstract

Carbohydrate graft copolymers were prepared by using microwave assissted irradiation in company with three different types of coatings; sulphonate doped conducting polymer coatings, adduct modified clay based composite coatings and smart functional poly-thiourea formaldehyde based self-healing coatings by using various polymerization methods, exploiting their eco-friendly nature. The synthesized material was characterized by different analytical techniques such as fourier transformed infrared spectroscopy (FT-IR) for functional group identification, X-ray powder diffraction (XRD) was used for phase composition and identification and the thermal properties of afore synthesized material were explored using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The synthesized graft copolymers were also run for electrochemical analysis (EIS and Tafel) in artificial seawater in order to check their corrosion inhibition properties. Coatings were also analyzed electrochemically using electrochemical impedance spectroscopy (EIS) along with tafel measurements. SEM-EDX was employed for particle characterization and surface morphology of coatings after electrochemical corrosion testing. The results showed that the synthesized corrosion inhibitors and coatings can be successfully employed against marine corrosion.