Fabrication of lightweight, high-strength Al2O3-B2O3 Scaffolds with enhanced adsorption properties via extrusion-based 3D printing

Abstract

Al₁₈B₄O₃₃ is a binary compound formed in Al₂O₃-B₂O₃ systems, which has excellent properties such as hierarchical pore structure, lightweight, and high adsorption. In this study, Al₂O₃ and H₃BO₃ were used as the raw materials to prepare ceramic samples via extrusion-based 3D printing. The solid content of the ceramic slurry and sintering temperature were investigated. In addition, to further evaluate the potential biological applications of the porous material, biocompatibility experiments were conducted. The results show that the bending strength ranging from 8.71 to 40.63 MPa and the apparent porosity between 47.65 % and 55.33 %. And the prepared ceramic scaffold not only possesses significant protein adsorption capacity, but also promotes the adhesion and distribution of cells on its surface. This highlights the potential application of the Al₂O₃-B₂O₃ Scaffolds prepared in this study in the field of tissue engineering and regenerative medicine.