Abstract
This study aimed to investigate the effects of TNT/CS-PPy@Sr-HAP composite coatings on Ti alloys that were used to develop the coating by anodization via electrophoretic deposition method. The formation of TNT/CS-PPy@Sr-HAP composite coatings was characterized by FT-IR, XRD, and FESEM with EDAX analyses. The mechanical performance of the composite coating was investigated for its thickness, microhardness, and adhesion tests. Antibacterial tests showed that TNT/CS-PPy@Sr-HAP (II) composite coated sample recorded the maximum level of antimicrobial activity against E. coli and S. aureus bacteria was found to be 25 & 22 mm for 100 μL samples, respectively. The in vitro studies confirmed that TNT/CS-PPy@Sr-HAP (II) composite coating exhibited a greater number of viable cells found to be ∼99.7% after 7 days of incubation. Potentiodynamic polarization and electrochemical impedance studies were performed on TNT/CS-PPy@Sr-HAP (II) composite coatings resulting in its better corrosion behavior when compared to other coatings. All these results show that TNT/CS-PPy @ Sr-HAP (II) composite coated on Ti implant alloy will serve as a potential material for orthopedic applications.
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