论文部分内容阅读
通过Piranha溶液(体积比H2SO4:H2O2=7:3)处理在医用钛表面形成纳米网状结构的氧化层。利用自组装技术在材料表面接枝十八烷基三氯硅烷(OTS)膜,对OTS膜层进行紫外光照,探讨材料亲疏水表面对电化学沉积钙磷涂层的影响。通过傅里叶变换红外谱仪(FTIR)、接触角测定仪、X射线衍射仪(XRD)、场发射扫描电镜(FE-SEM)对OTS膜和钙磷涂层进行了表征和探讨。结果表明活性钛表面OTS的水接触角(109.8±2.1)°经UV辐照后降低到(63.4±1.8)°,其表面能由37.50 m J·m-2增加到45.18 m J·m-2。通过电化学方法使钙磷沉积在活性钛、不同的Ti-OTS亲疏水表面。研究结果表明经UV辐照120 min后的Ti-OTS表面钙磷涂层更均匀有序,有望能提高植入材料的稳定性。
By Piranha solution (volume ratio of H2SO4: H2O2 = 7: 3) treatment of titanium in the medical surface to form a nano-mesh oxide layer. The surface of the material was grafted with the octadecyltrichlorosilane (OTS) film by self-assembly technique. The OTS film was irradiated with UV light to investigate the influence of the hydrophilic and hydrophobic surface of the material on the electroless deposition of calcium phosphate coating. The OTS film and Ca-P coating were characterized and characterized by FTIR, XRD and FE-SEM. The results showed that the water contact angle (OTS) of active titanium surface (109.8 ± 2.1) ° decreased to (63.4 ± 1.8) ° after UV irradiation and its surface energy increased from 37.50 m J · m-2 to 45.18 m J · m-2 . Calcium and phosphorus were electrochemically deposited on active titanium and different Ti-OTS hydrophilic surfaces. The results show that the surface of Ti-OTS after 120 min UV irradiation more uniform and orderly calcium-phosphorus coating is expected to improve the stability of implanted materials.