Octacalcium Phosphate Fiber Synthesized by Homogeneous Precipitation Method

武汉理工大学学报-材料科学版(英文版), 2010, 25(5): 747-752. doi: 10.1007/s11595-010o0085-0

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

2.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;National Engineering Resesrch Center for Human Tissue Restoration and Function Reconstruction, South China University of Technology, Guangzhou 510640,China

3.Key Lab of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China

4.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

基金项目: the Guangzhou Municipal Science and Technology Bureau(2008J1-C101) supported in part by the National Natural Science Foundation of China(50803019) the Doctoral Program of Ministry of Education of China(200805611030)

Octacalcium Phosphate Fiber Synthesized by Homogeneous Precipitation Method

WANG Xiaojun ^1, , FANG Liming ^2, , LU Xiong ^3, , ZHAO Yaoming ^4,

1.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

3.Key Lab of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China

4.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

Keywords： octacalcium phosphate

Calcium phosphate fiber was synthesized by homogeneous precipitation method using urea as precipitation agent. Effects of the reactant concentration and hydrothermal temperature on the calcium phosphate morphology and composition were studied using SEM, FTIR and XRD. It is found that free octacalcium phosphate(OCP) fiber can be synthesized when the reactant concentrations are 0.167 mol/L for Ca(NO3)2, 0.1 mol/L for (NH4)2HPO4, and 0.6-0.7 mol/L for (NH2)CO, respec-tively, with the initial reactant solution pH value around 2.2, hydrothermal temperature 90 ℃ and termination reaction at pH value around 5.0. At very low urea concentration, the product size distri-bution is highly inhomogeneous, however, at an excessively high concentration the product becomes larger and shorter and a mixture of OCP and hydroxyapatite (HA). Increasing the hydrothermal tem-perature is favorable to the fast precipitation of OCP, higher productivity and finer product.

参考文献

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Octacalcium Phosphate Fiber Synthesized by Homogeneous Precipitation Method

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