Electrophoretic co-deposition of PEEK-hydroxyapatite composite coatings for biomedical applications

Colloids and Surfaces. B, Biointerfaces
Fatih Erdem BastanA R Boccaccini

Abstract

This study focuses on the optimization of electrophoretic deposition (EPD) and suspension parameters for producing PEEK-hydroxyapatite (HA) coatings with feasible microstructure, adhesion strength, and in-vitro bioactivity. Nanostructured hydroxyapatite (HA) micro-granules were incorporated with PEEK to form PEEK-hydroxyapatite composite coatings via EPD. After EPD, a heat-treatment at 375 °C was applied for densification of the coatings and for enhancing the adhesion between the coatings and the substrates. It was found that both adhesion strength and in-vitro bioactivity of the coatings were dependent on the PEEK and HA relative contents. Thus, increasing the amount of HA improved the bioactivity while decreased the adhesion strength of the coatings. Apatite-like layer formation was observed on coatings with high HA content after incubation for three days in simulated body fluid (SBF). Finally, a deposition mechanism was proposed for the EPD of the PEEK-hydroxyapatite composite system.

Citations

Feb 14, 2020·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Fatih Erdem Baştan
Aug 11, 2018·Journal of Materials Science. Materials in Medicine·R S BrumC A M Benfatti
Jan 30, 2021·Frontiers in Bioengineering and Biotechnology·Xinming GuYanmin Zhou
Apr 18, 2021·Colloids and Surfaces. B, Biointerfaces·Bankole I OladapoFrancis T Omigbodun
Aug 23, 2021·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Naresh KumarBalamurugan A Vellayappan

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