Control of crystal orientation of hydroxyapatite by imposition of a high magnetic field
Control of crystal orientation of hydroxyapatite by imposition of a high magnetic field
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DOI：
10.2320/matertrans.44.1133
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发表时间：
2003-06-01
影响因子：
1.2
通讯作者：
Asai, S
中科院分区：
文献类型：
--
作者：
Inoue, K;Sassa, K;Asai, S
羟基磷灰石是构成生物骨骼和牙齿的主要成分，是最适合临床应用的生物材料。由于羟基磷灰石的晶面具有不同的生物相容性和对蛋白质的吸收活性，因此有必要选择合适的晶面在体内使用。因此，羟基磷灰石的晶体取向是生物材料加工中非常重要的课题之一。在本研究中，羟基磷灰石的晶体取向控制在高磁场下的胶体过滤（滑移铸造）工艺中进行，并在Okido等人开发的热衬底法中引入了高磁场的新工艺。通过对羟基磷灰石晶体的x射线衍射图和扫描电镜（SEM）图像评价取向指数，证实了该工艺的有效性。测定了羟基磷灰石在磁场作用下的晶轴排列。
A hydroxyapatite is most suitable biomaterial for clinical application, because it is a main component which constitutes bones and teeth of an organism. Since the hydroxyapatite has different biocompatibility and absorptive activity of proteins for its crystal plane, it is necessary to use the appropriate crystal plane for use in vivo. Thus, the crystal orientation of the hydroxyapatite is one of the very crucial subjects in biomaterials processing. In this study, the control of crystal orientation of the hydroxyapatite has been conducted in the colloidal filtration (slip casting) process under a high magnetic field and a new process where the high magnetic field is introduced in the heat substrate method developed by Okido et al. The usefulness of the processes has been confirmed through the orientation index evaluated by X-ray diffraction patterns and scanning electron microscope (SEM) images of hydroxyapatite crystals. The crystal axis of hydroxyapatite aligned by a magnetic field was determined.