EFFECT OF TEXTURE ON THE RATE OF HYDROXYAPATITE FORMATION ON GEL-SILICA SURFACE

被引:215
作者
PEREIRA, MM
CLARK, AE
HENCH, LL
机构
[1] Advanced Materials Research Center, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida
关键词
D O I
10.1111/j.1151-2916.1995.tb08686.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
An apatite layer can be formed on pure gel-silica soaked in simulated body fluid. The rate of formation depends on solution parameters and sintering temperature of the gel-silica. In this study, the effect of the texture of the gel-silica on the rate of hydroxyapatite formation was investigated. The apatite formation was monitored by means of Fourier-transform infrared reflection spectroscopy as well as by the measurement of changes in the ion concentration of the fluid. The induction time for apatite nucleation on the gel-silica decreased as pore size and pore volume increased. The substrate parameters that affect nucleation are discussed and a mechanism that assumes pores as nucleation sites for hydroxyapatite is proposed.
引用
收藏
页码:2463 / 2468
页数:6
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