| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Surface Engineering and Characterization of Titanium and Titanium Alloys
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| Presentation Title |
Electrophoretic Deposition, Microstructure and Properties of Multicomponent Sodium Alginate-based Coatings on Titanium Biomaterials |
| Author(s) |
Tomasz Moskalewicz, Maciej Warcaba, Marcin Kot, Zoya Hadzhieva, Aldo R. Boccaccini |
| On-Site Speaker (Planned) |
Tomasz Moskalewicz |
| Abstract Scope |
In this work, multicomponent sodium alginate-based coatings incorporating bioactive hydroxyapatite (HA) nanoparticles and antimicrobial graphene oxide (GO) nanosheets were electrophoretically deposited (EPD) on commercially pure titanium and near-β Ti-13Nb-13Zr alloy. The suspensions, EPD kinetics and mechanisms were studied to fabricate dense coatings. A cross-linking process between HA and SA occurred. Both HA and GO enhanced coating mechanical stability. The state of preparation of the substrates surface as well as the HA and GO content in suspension significantly influence the coating adhesion and scratch resistance. All multicomponent coatings had higher adhesion to both titanium biomaterials and higher scratch resistance than the pure SA coatings. HA agglomerates and GO nanosheets were relatively homogeneously distributed within the sodium alginate matrix. The GO nanosheets were oriented parallel to the surface of the coatings. The coatings exhibited a hydrophilic surface with well-developed topography and great potential for enhancing biomedical applications of titanium biomaterials.Acknowledgments: This work was supported by the National Science Centre, Poland (decision no DEC-2018/31/G/ST5/00429). The authors also acknowledge support from the German Science Foundation (DFG) (project BO 1191/25-1). |