Abstract
In this study, poly4-(nicotinamido)-4-oxo-2-butenoic acid (PNOE) was prepared by the electro polymerization of 4-(nicotinamido)-4-oxo-2-butenoic acid (NOE) monomer on a 316 stainless steel (St.St) which acts as an anticorrosion coating. Fourier transforms infrared (FTIR), atomic force microscopy (AFM), scanning electron microscopy (SEM), and cyclic voltammetry were used to diagnose the structure and the properties of the prepared polymer layer. The corrosion behavior of the uncoated and coated 316 St.St were evaluated by using an electro chemical polarization technique in 0.2 M hydrochloric acid solution as a corrosive medium at a temperature range of 293 to 323 K. Nano materials, such as nano ZnO and graphene were added in different concentrations to the monomer solution for improving the corrosion resistance of the 316 St.St surface. The results showed that the values of protection efficiencies of the polymeric coating were increased after adding the nano materials. The kinetic and thermodynamic activation parameters were also calculated and the biological activity of the polymer film against Gram negative and positive bacteria was studied.
Highlights
Despite much progress in the sciences and technologies of corrosion protection and control, the phenomenon of corrosion, usually of metals and alloys, continues to pose a major apprehension to many industries around the world
Corrosion resistance of St.St in the presence of chloride ions can be developed by the application of a protective coating, which has been widely used for the control of metal corrosion [3]
Good antimicrobial polymers must be biocidal to broad spectra of pathogenic microorganisms, insoluble in water for variable applications, and unlikely to decompose to toxic materials [18, 19]
Summary
Despite much progress in the sciences and technologies of corrosion protection and control, the phenomenon of corrosion, usually of metals and alloys, continues to pose a major apprehension to many industries around the world. The corrosion protection tests of uncoated and coated St.St in 0.2M HCl solution at temperatures of 293 to 323 K were conducted by using the electrochemical polarization technique. Graphene (0.004g) was added to the monomer solution after dispersing it, followed by the addition of 0.04g of nano-ZnO to develop the polymeric coating against corrosion and microbial activities.
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