聚乙烯吡咯烷酮为模板合成球状羟基磷灰石  

Synthesis of Spherical Hydroxyapatite with Polyvinylpyrrolidone as Template

作　　者：邱超凡[1] 肖秀峰[1] 刘榕芳[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《广州化工》2007年第3期50-54,63,共6页GuangZhou Chemical Industry

摘　　要：以Ca（NO3）2·4H2O和（NH4）3PO4·3H2O为反应物，聚乙烯吡咯烷酮（PVP）为模板，成功地合成了直径为30～50nin的球状羟基磷灰石。用X射线粉末衍射（XRD）分析、傅里叶变换红外吸收光谱（FTIR）、热重一差热分析（TG-DTA）和透射电子显微镜（TEM）等手段对所制得的样品进行了表征，结果表明PVP的浓度很大程度地影响了HA的形貌。在浓度为2．0～5．0％PVP为模板的条件下可以合成直径为30～50n的HA。球状HA形成的机理可能与PVP在溶液中的特定立体化学构象有关。Ca（NO3）2·4H2O and NH4）3PO4·3H2O used as reagents and polyvinylpyrrolidone （PVP） as template, spherical hydroxyapatite （HA） with diameter of 30～50 nm was synthesized successfully. The crystal phase, chemical composition, microstructure of the obtained HA were characterized by X-ray powder diffraction （XRD） analysis, fourier-transform infrared spectroscopy（FTIR）, thermogravimetric analyzers-microcomputer differential thermal analyzers （TG-DTA） and Transmission electron microscopy （TEM）. The results showed that the concentration of PVP significantly affects the morphologies of the HA. Spherical hydroxyapatite particle with diameter of 30～50 nm can be synthesizedby using a certain concentration （2.0～5.0 % ） PVP as template. The crystallinity of HA decreases continuously as the PVP content increases. The reason of forming spherical HA is possi- bly because the different concentration of PVP solution had different stereochemistry.

关 键 词：羟基磷灰石 球状 纳米 聚乙烯吡咯烷酮 模板 

分 类 号：TQ326.6[化学工程—合成树脂塑料工业]