摘要
用水热合成法制备了纳米磷灰石晶体。用透射电镜(TEM)、X射线衍射(XRD)、傅立叶-红外光谱(FT-IR)、等离子发射光谱(ICP)和X光电子能谱(XPS)分析和表征了纳米羟基磷灰石(n-HA)和牙磷灰石的组成、结构和形貌。结果表明用水热合成法制备的纳米磷灰石晶体有与牙无机质十分类似的组成、结构和形貌,同样含有羟基、碳酸根和钠离子。从仿生学角度出发,在制备纳米羟基磷灰石的过程中,应适当引入CO32-、F-以利于更好地模仿自然牙的组成,制备出高性能的n-HA与高分子或牙科树脂复合材料。
Nano-apatite crystals was made from hydrothermal treatment. The crystal morphology and composition of the synthesized nano-HA were investigated using TEM, IR, XRD, ICP and XPS techniques and were also compared with those of human posterior teeth. The results indicate that nano-apatite crystals have a similar composition, crystal structure, morphology, crystalinity to that of human teeth, and also containing OH-, CO32-, Na-. From the view of biomimesis, the above ions or groups should be introduced to the nano-apatite to mimic the biological apatite as much as possible. Those analysis provide a promising perspective for further n-HA/dental resin composites preparation.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2005年第7期1069-1071,共3页
Journal of Functional Materials
基金
国家高新技术研究发展计划(863计划)纳米材料专项基金资助项目(2002AA302205)
关键词
纳米磷灰石晶体
牙无机质
组成
结构
形貌
Biomaterials
Bionics
Composition
Crystal structure
Hydrothermal synthesis
Morphology
Transmission electron microscopy
X ray diffraction analysis
X ray photoelectron spectroscopy
