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本实验采用经抛光打磨的纯钛片与氢氧化钠溶液进行水热反应,在钛片表面形成一维钛酸盐纳米结构薄膜,水热处理后的样品浸泡在模拟体液中进一步矿化,研究其表面诱导磷灰石沉积的能力。采用TEM、SEM、XRD、FTIR和EDX等测试手段表征样品矿化前后钛片表面的微观形貌、结构及元素组成。研究了反应时间对样品表面微观结构及性质的影响,并探讨了纳米结构形成的机理。通过对样品矿化后表面羟基磷灰石形成情况的研究,得出了最佳仿生表面的微观结构组成。结果显示:钛片与氢氧化钠水热反应能在其表面形成结构规整,尺寸均一的纳米结构薄膜;TEM结果表明钛片与6 mol/L氢氧化钠溶液在180℃条件下反应1 h便可观察到纳米结构的形成;通过对比不同反应条件下样品表面纳米结构的SEM结果得知:反应时间对表面薄膜的纳米结构的尺寸及结构均有影响;FTIR及XRD结果表明水热处理后的钛片表面有钛酸盐和钛酸生成,EDX及XRD结果显示水热处理后的钛片经SBF浸泡7 d后其表面能够诱导磷灰石沉积。
In this experiment, polished and polished pure titanium plate and sodium hydroxide solution were hydrothermally reacted to form a one-dimensional titanate nano-structured film on the surface of the titanium plate. The samples after the hydrothermal treatment were soaked in the simulated body fluid for further mineralization, Surface induced apatite deposition ability. The morphology, structure and elemental composition of the surface of the titanium before and after mineralization were characterized by TEM, SEM, XRD, FTIR and EDX. The influence of reaction time on the microstructure and properties of the sample surface was investigated and the mechanism of nanostructure formation was also discussed. Through the study on the formation of hydroxyapatite on the surface of the sample after mineralization, the microstructure of the best biomimetic surface was obtained. The results show that the hydrothermal reaction between titanium plate and sodium hydroxide can form a structured and uniform nanostructured film on the surface of the plate. The TEM results show that the reaction between titanium plate and 6 mol / L sodium hydroxide solution at 180 ℃ for 1 h The formation of nanostructures was observed. SEM results of the nanostructures on the surface of samples were compared under different reaction conditions. It was found that the reaction time affected the size and structure of the nanostructures. The FTIR and XRD results showed that the hydrothermal Ti Titanate and titanate were formed on the surface of the sheet. The results of EDX and XRD showed that the surface of hydrothermally treated titanium sheet was able to induce the deposition of apatite after it was soaked in SBF for 7 days.