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

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.

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Bioactive Glass-Biopolymer Multilayer Coatings Fabricated by Electrophoretic Deposition Combined with Layer-by-Layer Assembly

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.170 ◽

2015 ◽

Vol 654 ◽

pp. 170-175 ◽

Cited By ~ 1

Author(s):

Qiang Chen ◽

Sandra Cabanas-Polo ◽

Ya Ping Ding ◽

Aldo Roberto Boccaccini

Keyword(s):

Bioactive Glass ◽

Electrophoretic Deposition ◽

Multilayer Coating ◽

Multilayer Coatings ◽

Layer By Layer ◽

Water Contact ◽

Characterization Methods ◽

Angle Measurements ◽

Contact Angle Measurements

45S5 bioactive glass (BG) based multilayer coatings on stainless steel were produced by a combination of electrophoretic deposition (EPD) and layer-by-layer (LbL) deposition. The properties of the multilayer coating were tested with different characterization methods including SEM, FTIR, XRD, laser profilometer and water contact angle measurements. Degradation and in-vitro bioactivity behaviors were tested in simulated body fluid (SBF) over different time periods. The decomposition of the coating was inhibited and the hydroxyapatite (HA) formation after short immersion period (0.5d) was confirmed. At the same time, levofloxacin, used as a model antibiotic, was incorporated into the multilayer structure for antibacterial purpose.

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Electrophoretic Deposition and Characterization of Chitosan/45S5 Bioactive Glass Composite Coatings on Porous Titanium for Biomedical Applications

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.189 ◽

2015 ◽

Vol 654 ◽

pp. 189-194 ◽

Cited By ~ 8

Author(s):

S. Borjas ◽

E.J. Gil ◽

L. Cordero ◽

J.J. Pavón ◽

J.A. Rodriguez-Ortiz ◽

...

Keyword(s):

Bioactive Glass ◽

Electrophoretic Deposition ◽

Composite Coatings ◽

High Vacuum ◽

Processing Parameters ◽

Porous Titanium ◽

Glass Composite ◽

Set Up ◽

Titanium Structure

Porous titanium samples of cp Ti grade IV were obtained by space-holder technique (50%vol of NH4HCO3, 800 MPa, 1250 oC during 2h in high vacuum), producing a good balance between stiffness and mechanical strength. The samples were coated with chitosan/45S5 bioactive glass composite by electrophoretic deposition. Homogeneity, infiltration efficiency, and coatings integrity (cracking and adhesion) were evaluated in order to establish correlations with processing parameters. SEM, FTIR, and contact profilometry were performed for detailed characterization of the coatings; and micro-mechanical properties (P-h curves and scratch testing) were set-up as well. Optimum EPD parameters were 25V, 7 min and suspension containing 0.5 g/L chitosan and 1.5 g/L BG a titanium structure with pore sizes greater than 200 μm are required.

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