Graphene Oxide/Polyaniline Composite Coating for Corrosion Protection of Mild Steel in 0.5M Sodium Chloride (NaCl) Solution

Abstract

Polyaniline (PANI) is a well-known conductive polymer that is light in weight, non-toxic, inexpensive and has strong electrochemical and reversible redox properties. According to Chang et al. (2012), adding well-dispersed graphene oxide to PANI enhances the pathways for reactive gas diffusion in polymer coatings. In comparison to pristine PANI polymer coatings, this results in a notable improvement in the corrosion protection of metallic substrates. Additionally, the steel surface is successfully preserved by GO's impermeability to oxygen and water.