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

Fatih E Baştan; Muhammad Atiq Ur Rehman; Yasemin Yıldıran Avcu; Egemen Avcu; Fatih Üstel; Aldo R Boccaccini

doi:10.1016/j.colsurfb.2018.05.005

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

Colloids Surf B Biointerfaces. 2018 Sep 1:169:176-182. doi: 10.1016/j.colsurfb.2018.05.005. Epub 2018 May 3.

Authors

Fatih E Baştan¹, Muhammad Atiq Ur Rehman², Yasemin Yıldıran Avcu³, Egemen Avcu⁴, Fatih Üstel⁵, Aldo R Boccaccini⁶

Affiliations

¹ Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Thermal Spray Research and Development Laboratory, 54187, Esentepe, Sakarya, Turkey; Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany. Electronic address: febastan@sakarya.edu.tr.
² Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany.
³ Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany; Kocaeli University, Engineering Faculty, Department of Mechanical Engineering, 41380, Kocaeli, Turkey.
⁴ Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany; Kocaeli University, Ford Otosan İhsaniye Automotive Vocational School, Machine and Metal Technologies, 41680, Kocaeli, Turkey.
⁵ Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Thermal Spray Research and Development Laboratory, 54187, Esentepe, Sakarya, Turkey.
⁶ Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany. Electronic address: aldo.boccaccini@ww.uni-erlangen.de.

PMID: 29772473
DOI: 10.1016/j.colsurfb.2018.05.005

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.

Keywords: Co-deposition; Composite coating; EPD; Electrophoretic deposition; Hydroxyapatite; PEEK.

MeSH terms

Benzophenones
Biomedical Technology
Coated Materials, Biocompatible / chemical synthesis
Coated Materials, Biocompatible / chemistry*
Durapatite / chemical synthesis
Durapatite / chemistry*
Electrophoresis
Ketones / chemistry*
Nanostructures / chemistry*
Particle Size
Polyethylene Glycols / chemistry*
Polymers
Surface Properties

Substances

Benzophenones
Coated Materials, Biocompatible
Ketones
Polymers
polyetheretherketone
Polyethylene Glycols
Durapatite