Study on preparation and properties of tetragonal BaTiO3/HA porous scaffolds

In this research, Hydroxyapatite (HA) was introduced into tetragonal BaTiO3 by rotary evaporation, and the optimal molar ratio of BaTiO3/HA in the composite was 3:1. The effects of different dispersants on the product phase, morphology and properties were discussed. The electroactive component BaTiO3 was exposed on the surface of BaTiO3/HA porous microspheres, which were assembled from finer particles similar to cubic. The specific surface area and pore volume of the samples reached the maximum value of 37.756 m2g−1 and 0.219 cm3g−1, respectively. All the samples had good ability to induce bone-like apatite formation in simulated body fluid. Moreover, the minimum d33 value was 3.23 pC/N, which was higher than that of human bone 0.7pC/N. In the PVA system, the porosity of the sintered block at 1000 ℃ was 61.03 %, and the corresponding compressive strength was 139.5 MPa, within the range of ideal bone scaffolds. In addition, all the sample had no cytotoxic effect on MSCs cells.