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 mJ·m2增加到45.18 mJ·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.
Titanium plates were grafted with octadecyl-trichlorosilane (OTS) after activated by piranha solution (H2SO4:H2O2=7:3 in volume ratio) and then the Ti-OTS was irradiated by UV light.The influence of UV irradiation on the calcium phosphate coating on different titanium samples obtained by electrochemical deposition was discussed.The OTS self-assembled monolayer and calcium phosphate coatings on titanium were characterized by fourier transform infrared spectroscopy (FTIR),contact angle tester,X-ray diffractometer (XRD) and field emission scanning electron microscopy (FE-SEM).The results show that the water contact angle of Ti-OTS is decreased from 109.8±2.1° to 63.4±1.8° after UV irradiation,and the surface free energy increases from 37.50 mJ.m-2 to 45.18 mJ.m-2.Highly homogeneous and ordered flower-like hydroxyapatite crystals are distributed on Ti-OTS-UV,which could be expected to improve the stability of the implant material.
参考文献
| [1] | 张林,谭帼馨,宁成云,刘绪建,廖景文.钛表面自组装硅烷化对仿生矿化性能和细胞增殖的影响[J].稀有金属材料与工程,2012(11):1985-1989. |
| [2] | 姚超,高国生,林西平,杨绪杰,陆路德,汪信.硅烷偶联剂对纳米二氧化钛表面改性的研究[J].无机材料学报,2006(02):315-321. |
| [3] | 谈国强,宋亚玉,苗鸿雁,博海洋,夏傲.基于紫外光辐照改性自组装单层膜图案化表面的铁酸铋薄膜制备与表征[J].硅酸盐学报,2010(02):215-220. |
| [4] | 宁成云,刘绪建,郑华德,谭帼馨,马强,王玉强.硅烷偶联剂对纯钛表面改性的研究[J].稀有金属材料与工程,2009(11):2017-2019. |
| [5] | 胡皓冰,林昌健,陈菲,胡仁,郭明.电化学沉积制备羟基磷灰石涂层及机理研究[J].电化学,2002(03):288-294. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%