Abstract
Bio-synthetic polymer incorporated metallic biomaterials and their development acts vivid in orthopedic applications. Zirconium is an evolving implant material in the field of orthopedics. In the present work, Zirconia nanotubes (ZNTs) were fabricated by electrochemical anodization technique. Combining bio-synthetic polymer with zirconia nanotubes could improve the properties of zirconium for load bearing applications. Therefore, Chitosan-PEDOT (ChP) composite was coated on the fabricated ZNTs through dip-coating method. The surface characterization studies were carried out by HR-SEM, ATR-FTIR, XRD and XPS analysis to confirm the formation of ZNTs and ChP coated ZNTs (ChP-ZNTs). The corrosion behavior of bare, ZNTs and ChP-ZNTs were evaluated using Electrochemical Impedance Spectroscopy (EIS), Potentiodynamic polarization studies and Scanning Electrochemical Microscopy (SECM) shows that ChP-ZNTs exhibits superior corrosion inhibition. The In-vitro biomineralization of ChP-ZNTs was performed in Hanks’ solution for 7-days. From the MTT assay, the cell viability and proliferation rate of ChP-ZNTs show better viable percentage in comparison with ZNT and bare sample. Therefore, the fabricated ChP-ZNTs exhibit better corrosion resistance and biocompatibility for orthopedic application.
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