Preparation of Porous HA Bioceramics by Gelcasting and Pressureless Sintering
In the present work, porous HA scaffolds with well controlled pore size, porosity and high compressive strength were prepared by aqueous gelcasting. PMMA beads with different size were used as the pore forming agent. The compositions, microstructure and properties of porous HA bioceramics were analyzed by XRD, SEM, Hg porosimetry etc. The mechanical properties were also tested. For scaffolds with the porosity as 70%, the average compressive strength was 11.9±1.7 MPa. Results showed that glecasting process can be used for the preparation of porous HA biomaterials with well controlled pore size and improved mechanical properties.
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
J. X. Zhang et al., "Preparation of Porous HA Bioceramics by Gelcasting and Pressureless Sintering", Advanced Materials Research, Vols. 335-336, pp. 1454-1458, 2011