Characterisation and Wettability Properties of Anodised Titanium in Sulphuric Acid for Biomedical Application

Abstract

Anodic oxidation is an effective method to modify the smooth surface (bioinert) of titanium to rough or porous surface (bioactive) to be able the titanium to be used as artificial implant in biomedical. In this study, the effect of ultraviolet (UV) light treatment on anodised titanium in various UV light treatment conditions is evaluated. Anodised titanium was prepared using traditional anodic oxidation method in 0.3 M of sulphuric acid (H2SO4). The anodised titanium was modified by using 100 V of applied voltage with constant 75 mA.cm-2 current density for 10 min of oxidation process at room temperature. After anodic oxidation, the anodised titanium undergoes UV light treatment under different wavelength and soaking duration in distilled water. The anodised titanium films were characterised using X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM). Contact angle goniometer was used to determine the wettability properties of UV light treated anodised titanium. From this study, the UV light treatment affect the wettability properties of the anodised titanium without changing it physical properties. The UV-C (365 nm) of UV light wavelength with 4 hours soaking duration produced better hydrophilic properties. This will leads better apatite formation ability when soak in simulated body fluid for bioactivity test.