Development and Characterization of PEEK/B₂O₃-Doped 45S5 Bioactive Glass Composite Coatings Obtained by Electrophoretic Deposition

Abstract:

Three different glasses were synthesized by doping 45S5 bioactive glass with B₂O₃. The bioactivity of the glasses was evaluated by immersion in simulated body fluid (SBF) up to 3 days; all glasses showed the precipitation of hydroxyapatite (HAp) after one day of soaking in SBF. Electrophoretic deposition (EPD) was used to prepare PEEK/B₂O₃-doped 45S5 glass composite coatings on stainless steel substrates. The coatings were characterized by means of tape test (ASTM D3359-B), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), contact angle measurements, thermogravimetric analysis and in vitro bioactivity test. All composite coatings exhibited a porous and homogenous structure with a hydrophobic surface, according to the wettability test. The in vitro test in SBF demonstrated that the coatings were highly bioactive.

• Periodical: Key Engineering Materials (Volume 654)
• Pages: 165-169
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.654.165
• Online since: July 2015
• Authors: Marta Miola, Enrica Verné, Antonella Piredda, Sigrid Seuss, Sandra Cabanas-Polo, Aldo Roberto Boccaccini*
• Keywords: Bioactive Glasses, Composite Coatings, Electrophoretic Deposition (EPD)

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