Anodic oxidation of titanium in sulphuric acid (H2SO4) for biomedical application

摘要: Titanium (Ti) is widely used in the biomedical field because it light, strong and biocompatible. However, Ti non-bioactive and does not show any apatite forming ability after being implanted into body. Anodic oxidation one of traditional methods to modify surface titanium oxide (TiO2), thereby enhancing the biocompatiblity properties. Anodisation was done by supplying direct current (d.c) through ananode a cathode consisting substrate soaked the electrolyte sulphuric acid solution (H2SO4) with pH ranged from 0.3 2.1. Different voltages 10 300 V were applied investigate its effect on the TiO2 formation whereas H2SO4 concentrations on production was studied using three different 0.5 M, 1.5 M 3.0 M, respectively. Characterisation made terms microstructure field emission scanning electron microscope (FESEM), mineralogy x-ray diffraction (XRD) sample color captured digital camera. In vitro test was also conducted anodised soaking samples simulated body fluid (SBF) for seven days study growth hydroxyapatite (HAP). HAP can be enhanced ultraviolet (UV) irradiation. An alternative group samples were exposed UV rate compared those unexposed. The porosity increased as higher voltage concentration used. Though variable shape, found be directly proportional to electrolyte concentration. The XRD analysis showed that the anatase phase started at lower concentrations. Increasing contributed more induced rutile phase. irradiation test HAP grew appeared denser where light as compared SBF immersion dark condition.