Abstract
Shortening the period of bone repair based on BaTiO 3 /hydroxyapatite(HA) composites with osteoconductivity and osteoinductivity is important. However, when the piezoelectric properties of composites are matched with natural bone, the content of non-degradable BaTiO 3 needs to reach 90%, which may not conducive to clinical application. The barium titanate content in the composite was reduced by doping Er 3+ into the BaTiO 3 of BaTiO 3 /HA composites with enhanced piezoelectric properties. The piezoelectric constant and compressive strength of composites increased with the increase of Er 3+ -doped barium titanate (BTEr) content. Appropriate piezoelectric stimulation can promote the growth of osteoblasts. 70% BTEr/30% HA is more beneficial to the proliferation of osteoblasts than 70% BaTiO 3 /30% HA.
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