ИСТИНА

Composite materials are among the most promising materials for use in bone tissue engineering. The most studied of them are polycaprolactone (PCL), polylactide (PLA) and polyhydroxybutyrate (PHB), due to their biocompatibility. For successful use in medicine, materials must also have osteoconductivity, which can be provided in various ways. Currently, 3D printing technology is often used for this but the approaches to the application of this technology can be different. At the first stage of this work, a direct Kelvin structure was printed from a photopolymer, after which the mold was filled with a suspension of powders of magnesium and calcium oxides, as well as magnesium sulfate with additions of sodium and potassium sulfates. After firing, strong ceramic reverse Kelvin structures were subsequently filled with composite. The mechanical characteristics of the resulting ceramic structures were examined to determine the filling technique. Also, the process of selecting the optimal composition of the resulting ceramics was carried out; X-ray phase analysis was performed to study the composition. The optimal compositions were chosen - MgSO4 + 5.10% Na (K)2SO4. The firing temperature was selected based on the performed thermogravimetric analysis. Firing was carried out at temperatures of 800oC and 850oC, respectively.