Development of Biopolymer-Ceramic Composite Coatings by Electrophoretic deposition for Orthopedic Applications

The aim of this thesis is to develop biomaterials mainly biopolymer ceramic composite for orthopaedic application using Electrophoretic deposition method. First by producing PEEK coating using optimal parameters (2wt% PEEK suspension concentration, 20 V applied electric field, 1 cm electrode distance and 2 min as deposition time) on metallic substrate like stainless steel, it was proved that PEEK has a good adherent on stainless steel and can be sued as a material for long-term medical application which is using until now in spinal fusion, joint replacement, trauma applications, dental implants.

Offering several benefits such as mechanical strength, biocompatibility, imagine or sterilization properties and chemical resistance make this polymer attractive for other field of applications like aerospace, automotive and industry. This concluded also via various characterization methods like adhesion test and CO2 laser sintering as heat treatment method with the best parameters of 5% laser power, scan speed 1500 mm/s, hatch distance 0.10 mm.

Another part of this work based on production of PEEK/Bioglass composition coating by adding Biogas 45S5 with different concentration 10Vol%, 18Vol% and 30Vol% to PEEK. SEM micrographs shows the composite coating containing 18VOL% Biogas has much more homogenous, sense surface structure compared to other samples. The Taguchi design of experiment confirmed the results as well.


Further the bioactivity test was carried out to check if the PEEK/Biogas composite is able to deposit hydroxycarbonated apatite crystals on its surface. Increasing the immersion days in SBF, increased the formation of HCA layer containing calcium phosphate particles on the surface of PEEK, which was indicated with SEM images. PEEK/Bioglass coatings developed in this work should protect the stainless steel substrate from corrosion in SBF solution and also generally every coating containing Bioglass is bioactive and should improve the bonding of bone or soft tissue to the implant to change the healing process in a better way.