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Abstract
The corrosion resistance and antibacterial properties of ZK60 magnesium alloy implants have been enhanced via Plasma Electrolytic Oxidation (PEO) and electrospinning techniques. A robust, porous oxide coating was created on the ZK60 alloy using the PEO process, with characterization performed via SEM and XRD. Improved corrosion resistance of the PEO-coated samples was demonstrated through electrochemical analyses, including EIS and polarization tests. In addition to the PEO treatment, composite electrospun nanofibrous coatings were developed, incorporating curcumin-loaded mesoporous silica nanoparticles and bioactive glass. The electrospun nanofibers, which exhibited a diameter of 350 nm without beads, were characterized by Dynamic Light Scattering, Zeta Potential, Infrared Spectroscopy, BET, and XRD, confirming a curcumin loading of 10 wt%. Significant antibacterial activity against Escherichia coli and Staphylococcus aureus was shown by these fibers, and high bioactivity was observed after 14 days of immersion in simulated body fluid (SBF). The combination of PEO coatings and electrospun nanofibers highlights an enhancement in both corrosion resistance and antibacterial properties for implant applications.
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