Electrophoretic deposition of moringa loaded chitosan coatings on Mg: A study on antibacterial properties and degradation kinetics

Moringa loaded chitosan coatings (coating thickness -10 mu m) were deposited on Mg substrate via electrophoretic deposition (applied electric field = 15 V/cm and deposition time = 20 min). Scanning electron microscopy images of chitosan/moringa coatings confirmed that the deposited coatings are densely packed and uniform. The presence of chitosan and moringa in the coating was confirmed by Fourier transform infrared spectroscopy. The corrosion studies revealed that the degradation rate of bare Mg decreased -7 order of magnitude upon coating deposition. Furthermore, the potential release of moringa from coatings inhibited the growth of Staphylococcus aureus and Escherichia coli. The moringa loaded chitosan coatings presented suitable morphology, electrochemical properties, and antibacterial properties for potential application in orthopedic devices.