izvorni znanstveni rad
In this work, aluminium nanoparticles (Al NPs) as fillers were homogenized with epoxy coating in order to protect the surface of pipes made of gray cast iron. Nowadays, there is a need to develop a new generation of coatings to protect the inner surface of pipes from corrosion and microorganisms’ influences. The samples were analyzed with SEM observation and EDX to evaluate and characterize the uniform distribution of Al NP in the nanocomposites. The effect of corrosion protection performance of nanocomposite was analyzed using scanning electrochemical microscopy (SECM) and electrochemical impedance spectroscopy (EIS). This analysis confirms improvement of the corrosion resistance of nanocomposite in comparison with epoxy matrix without nanoparticles. The introduction of Al NP into epoxy matrix the mechanical properties has been slightly increase. Furthermore, the antimicrobial test indicated that the nanocomposites had bactericidal activity against Pseudomonas aeruginosa and Bacillus subtilis bacteria. The small size of the aluminium particles and their rapid oxidation enable this nanocomposite to possess dual properties. Nanocomposites improve mechanical, anticorrosive and antimicrobial properties which means that they provide the better resistance to external mechanical influences and effectively prevent corrosion and bacterial growth.
corrosion; bacterial; nanoparticles; epoxy coating
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