Nano and Micro Scale Oxidative Patterning of Titanium Implant Surfaces for Improved Surface Wettability.
A simple and scalable surface modification treatment is demonstrated, in which nano and microscale features are introduced into the surface of titanium (Ti) substrates by means of a novel and eco friendly oxidative aqueous solution composed of hydrogen peroxide (H202) and sodium bicarbonate (NaHCO3) By immersing mirror polished Ti discs in an aqueous mixture of 30 wt% H2O2/5 wt% NaHCO3 at 23 3 degrees C for 4 h, it was confirmed that this mixture is capable of generating microscale topographies on Ti surfaces. It also simultaneously formed nanochannels that were regularly arranged in a comb like pattern on the Ti surface, thus forming a hierarchical surface structure. Further, these nano/micro textured Ti surfaces showed great surface roughness and excellent wettability when compared with control Ti surfaces. This study demonstrates that a H2O2/NaHCO3 mixture can be effectively utilized to create reproducible nano/microscale topographies on Ti implant surfaces, thus providing an economical new oxidative solution that may be used effectively and safely as a Ti surface modification treatment.
Journal of nanoscience and nanotechnology