摘要
采用聚乙烯吡咯烷酮(PVP)为模板剂仿生合成了纳米羟基磷灰石(nHAP),并通过控制PVP的添加量合成出长棒、短棒和球形的nHAP。通过XRD、FTIR、TG-DTA和TEM分别对nHAP的晶相、化学组成、热稳定性和形貌进行分析。研究表明,PVP与nHAP之间存在较强的化学键合,且合成nHAP的形貌随PVP的添加量而改变,nHAP的结晶度随PVP添加量的增大而降低;最后通过化学键及配位理论对PVP合成过程中控制nHAP颗粒形貌的机理进行了探讨。
Long rod-like, short rod-like and spherical nano-hydroxyapatite(HAP) was controlled synthesized using polyvinylpyrrolidone(PVP) as a template. The obtained hydroxyapatite was investigated by X-ray diffraction(XRD), Fourier-transform infrared spectroscopy ( FTIR), thermogravimetric-differential thermal analysis (TG-DTA) and transmission electron microscopy(TEM). The experimental results showed that the crystallinity of HAP decreased with the incresing of contents of PVP,and a strong chemical bonding exists between the PVP molecules and HAP. Furthermore, mechanisms of PVP in controlling the shape and size distribution of HAP were proposed.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2009年第6期1042-1045,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50872035
50502015)