In Situ Micro-XRD Structure Analysis of Bioapatite in Human Ribs |
| Journal |
Key Engineering Materials (Volumes 330 - 332) |
| Volume |
Bioceramics 19 |
| Edited by |
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu |
| Pages |
11-14 |
| DOI |
10.4028/www.scientific.net/KEM.330-332.11 |
| Online since |
February, 2007 |
| Authors |
Shan Shan Wei,
Yi Ping Tian,
Hui Li,
Ling Hong Guo
|
| Keywords |
Bioapatite, Bone, Rietveld, Structure, X-Ray Diffraction (XRD) |
| Abstract |
Structure parameters of minerals in human bone, bioapatite, are very important for
biomaterials. In situ micro-XRD and Rietveld structure refinement were used to extract subtle
structure information of human ribs. Rietveld refinement testified that lattice parameters, crystallite
size and microstrain for cortical and cancellous bones were significant difference. Anisotropic
crystallite sizes of human rib showed preferential growth of apatite along c-axis and the graded
variation at radial direction of bone axis. The variations of the subtle structures of bioapatite, such as,
P occupancy and P-O2 bond length, as well as distortion index of P-O tetrahedron, demonstrated the
tendency of mineralization and the content of CO3
2- in human ribs. |
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