Method: The polydopamine-coated titanium was successfully prepared from dopamine solution and bright polydopamine granules were randomly distributed on titanium surface after coating process.
Result: The surface roughness was not significantly decreased in the pure titanium (P>0.05), but significantly decreased (P<0.05) in the spark anodized titanium after the dopamine coating treatment. The contact angle of polydopamine-coated titanium surface was found to be lower than that of the untreated titanium surface. At the potentiodynamic polarization corrosion test, polydopamine-coated titanium has better corrosion-resistance than untreated titanium. The resistance of cytotoxicity is decreased by dopamine coating surface treatment (P<0.05).
Conclusion: Findings from this research suggested that polydopamine coating offer a versatile approach for the titanium surface modification.