Coating of Hidroxyapatite-Chitosan Composite on TiAlV Alloy with Electrophoretic Deposition Method

Abstract

Orthopedic implant nowadays often use TiAlV due to its high strength, lightweight and resistant to corrosion. However, TiAlV has poor biocompatibility and bioactivity. The objective of this research was to composite hydroxyapatite with chitosan and coat the surface with TiAlV under electrophoretic deposition method. Electrophoretic deposition process carried out by the potential difference of 80 V in an hour. The coated TiAlV was observed using scanning electron microscope (SEM). There were granules which were believed as hydroxyapatite. The density of those granules was quite high which was believed to be the existence of chitosan. X-ray diffraction and Fourier transformed infrared spectra showed that the alloy has been coated by the hydroxyapatite-chitosan composite. The coated TiAlV by the hydroxyapatite-chitosan composite lowered the corrosion rate and did not have toxic effect to endothelial cells based on the inhibition to the cells was only 35%.