Preparation of Porous Hydroxyapatite-Zirconia Composite Scaffolds by Combination of Gel-Casting and Polymer Sponge Methods
Hydroxyapatite (HA) doped with 3%yttria-stabilized 20wt% zirconia (ZrO2) ceramic were developed in order to produce a porous composite biomaterial by integrating the gel-casting technique with polymer sponge method with improved mechanical strength and controllable porous structure.The pore morphology,size,and distribution of the scaffolds were characterized using an electron microscope.The scaffolds prepared have an open,uniform and interconnected porous structure with a pore size of 300~500μm.The porosity of the open pores in the scaffold can be controlled by changing HA-ZrO2 composite concentration and it is between 87%~35%.A compressive strength of 12MPa for HA-ZrO2 porous scaffolds with HA-ZrO2 concentration of 55wt% was achieved,which is comparable to that of cortical bone.
HA-ZrO2 porous scaffold Gel-casting Polymer sponge method Porosity
Li-li WANG Xiu-feng WANG Hong-tao JIANG Cheng-long YU
Shaanxi University of Science & Technology, Xian 710021, Peoples Republic of China
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
616-619
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）