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

•When the system component was BaTiO3/HA = 3/1, a relatively pure BaTiO3/HA composite could be obtained.•The BaTiO3 similar to cubic block was crystallized on the surface of the HA nanorod through liquid phase.•The BaTiO3/HA microsphere obtained after adding PVA had the highest specific surface area, pore volume and average pore size.•The porosity of BaTiO3/HA in PVA system was 61.03 %, and the corresponding compressive strength was 139.5608 MPa.•BaTiO3/HA microspheres had no cytotoxic effect on MSCs cells, which met the requirements of material cytotoxicity. 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.