纳米羟基磷灰石/聚氨酯复合材料的制备与表征  

Preparation and Characterization of Nano-Hydroxyapatite/Polyurethane Composites

作　　者：叶心亮[1] 黄素萍[1] 谢宝君[1] 罗颖[1] 周武艺[1] 董先明[1] 

机构地区：[1]华南农业大学理学院应用化学系生物材料研究所,广州510642

出　　处：《聚氨酯工业》2012年第1期42-45,共4页Polyurethane Industry

基　　金：国家自然科学基金(51003034);广东省科技计划项目(2008B020300006)

摘　　要：以模拟体液(SBF)为介质,采用仿生法制备了纳米羟基磷灰石(n-HA),通过原位聚合法制备了纳米羟基磷灰石/聚氨酯(n-HA/PU)复合材料。利用X射线衍射(XRD)、红外光谱(FT-IR)、热重分析(TGA)、扫描电镜(SEM)研究了n-HA和复合材料的结构和热稳定性、表面形貌特征。结果表明,在SBF中用浓度为0.200 mol/L硝酸钙溶液制备出具有良好结晶度的n-HA,由此制备的n-HA/PU复合材料开孔率良好,有望成为一种性能良好的医用组织支架材料。Nano-hydroxyapatite （n-HA） powers were synthesized in the medium of simulated body fluid （SBF） by a biomimetic method. Nano-hydroxyapatite/polyurethane （n-HA/PU） composites were prepared by in-situ polymerization. The constitution, thermal stability of n-HA and n-HA/PU composites were analyzed by X-ray diffraction （XRD）,infrared spectroscopy（IR）, and thermo gravimetric analysis （TG）,, n-HA and n-HA/PU composites surface appearance were observed by scanning electron microscopy（SEM）. The results showed that n-HA had a good degree of crystallization in SBF with 0. 200 mol/L calcium nitrate solution, n-HA/PU composites had good porosity, and had a great potential use for medical tissue scaffold materials.

关 键 词：纳米羟基磷灰石 聚氨酯 复合材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TB33