Arian Mohammadzadeh et al. modified the graphene using montmorillonite (MMT). Sodium dodecyl benzene sulfonic acid was employed to modify graphene with montmorillonite. These nanoparticles are further modified by reacting with polyaniline as a conductive polymer. Open circuit test results reveal that nanocomposite prepared shows higher corrosion potential than other samples as shown in Fig 20 . In General, higher potential of coating represents the higher resistance to corrosion and vice versa. Table represents EIS values of electrochemical impedance and it reveal that values of Rc and Rts are significantly higher for synthesized nanocomposites as compared to other samples .