Synthesis and Properties of TiO 2 –SiO 2 /CaO Biomaterials with Spherical Particles Based on Tokem-200 Cation Exchange Resin

Biomaterials based on Tokem-200 cation exchanger containing spherical particles were synthesized from solutions using the sol-gel method. The outer frame of the particles is TiO 2 –SiO 2 , the inner part is filled with CaO (TiO 2 –SiO 2 /CaO sample). The carboxylic cation exchange resin Tokem-200 is characterized by high selectivity with respect to Ca 2+ ions, which makes it possible to use it in the development of biomaterials, since calcium is involved in the formation of bone tissue. Conditions for heat treatment of samples were established to produce a homogeneous structure of the material: heat treatment (drying at 60°C), annealing at 150, 250, 350°C for 30 min at each temperature step, annealing at 600°C for 6 h. It was proposed to use gelatin as a binder additive.