密度可控钛纳米棒阵列的制备及其矿化性能研究

Preparation and Mineralization Properties of Titanium Nanorod Arrays with Controllable Density

摘要:

通过控制电解液中的草酸含量，在医用纯钛表面构建密度可控的钛纳米棒阵列。利用场发射扫描电镜（FE-SEM）和原子力显微镜（AFM）对钛表面纳米棒阵列形貌和密度进行了表征，并在模拟体液（2SBF）中对其矿化性能进行研究。结果表明：钛纳米棒阵列密度随着草酸含量的增加而增大，钛表面构建纳米棒阵列结构有利于类骨钙磷矿物的沉积，当纯钛表面纳米棒阵列密度为（1.79±0.04）×1010/cm2时，在模拟体液中矿化性能优异，可见这种结构有利于材料与骨组织形成骨性结合，提高临床疗效

Abstract:

Ti nanorod arrays with controllable density on titanium surfaces were prepared by tuning the content of oxalic acid. The field emission scanning electron microscopy (FE-SEM) and atomic force microscope (AFM) were used to analyze the topography and density of titanium nanorod arrays. Bioactivity was investigated by immersing the samples in a simulated body fluid (2SBF) for 3 and 5 d. Results demonstrate that the different densities of nanorod arrays result from the change of the concentration of H+. The approach herein can be developed to be a facile nanotechnology for nano-functionalization of titanium. The structure of titanium nanorod arrays promotes the growth of calcium phosphate on the surface of the titanium, the mineralization ability is the best at density of (1.79 ± 0.04)×1010/cm2. By this token, the nanostructure facilitates the osseointegration between the bone tissue and implant, and subsequently improves the performance in clinic