| The Influence of Surface Morphology of Dense Ca-P Ceramics on Apatite Formation in Dynamic SBF |
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| 引用本文： | 段友容 许森 陈继镛 张兴栋. The Influence of Surface Morphology of Dense Ca-P Ceramics on Apatite Formation in Dynamic SBF[J]. 东华大学学报(英文版), 2005, 22(4): 63-66 |
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| 作者姓名： | 段友容 许森 陈继镛 张兴栋 |
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| 作者单位： | [1]State key Laboratory for Modification of Chemical Fibers and Polymer Material, Donghua University, Shanghai 200051 [2]Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610064 |
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| 摘 要： | This study aimed at exploring the effect of surface morphology of dense phosphate calcimn （Ca-P） ceramics upon the formation of bone-like apatite in static or dynamic simulated body fluid （SBF）. Dense and sandblasted calcium phosphate ceramics were immersed into dynamic SBF flowing at normal physiological speed of body fluid of skeletal muscle. The changes were characterized using SEM, XPS, IR and XRD. Changes can be observed after the sandblasted surface of dense calcium phosphate ceramics had been immersed in SBF for 14 days. XPS analysis results showed that the flake-like structure was composed of Ca, P, C, O; IR analysis result of surface structure of samples showed that there were specific peaks for CO3^2-; XRD results indicated the decrease in crystallinity and the increase in amorphous structure. The rough surface was advantageous for the formation of bone-like apatite. Increasing the Ca^2＋, HPO4^2- concentration of SBF could also enhance the bonelike apatite formation. All the results demonstrated that local concentration is a key factor affecting nucleation.
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| 关 键 词： | 致密磷酸钙陶瓷 表面形态 喷沙 磷灰石构造 SBF |
| 收稿时间： | 2004-08-26 |
The Influence of Surface Morphology of Dense Ca-P Ceramics on Apatite Formation in Dynamic SBF |
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| DUAN You-rong,XU Sen,CHEN Ji-yong,ZHANG Xing-dong. The Influence of Surface Morphology of Dense Ca-P Ceramics on Apatite Formation in Dynamic SBF[J]. Journal of Donghua University, 2005, 22(4): 63-66 |
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| Authors: | DUAN You-rong XU Sen CHEN Ji-yong ZHANG Xing-dong |
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| Abstract: | This study aimed at exploring the effect of surface morphology of dense phosphate calcium (Ca-P) ceramics upon the formation of bone-like apatite in static or dynamic simulated body fluid (SBF). Dense and sandblasted calcium phosphate ceramics were immersed into dynamic SBF flowing at normal physiological speed of body fluid of skeletal muscle.The changes were characterized using SEM, XPS, IR and XRD. Changes can be observed after the sandblasted surface of dense calcium phosphate ceramics had been immersed in SBF for 14 days. XPS analysis results showed that the flake-like structure was composed of Ca, P, C, O; IR analysis result of surface structure of samples showed that there were specific peaks for CO 2- __3; XRD results indicated the decrease in crystallinity and the increase in amorphous structure. The rough surface was advantageous for the formation of bone-like apatite. Increasing the Ca 2+ , HPO 2- __4 concentration of SBF could also enhance the bone-like apatite formation. All the results demonstrated that local concentration is a key factor affecting nucleation. |
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| Keywords: | Dense calcium phosphate ceramics sandblasted surface dynamic SB F bone-like a patite |
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