Variation of the surface adhesion force during the formation of octadecyl trichlororilane (OTS) .self-assembled monolayer on a glass substrate surface was investigated hy atomic force microscope (AFM). The research sh...Variation of the surface adhesion force during the formation of octadecyl trichlororilane (OTS) .self-assembled monolayer on a glass substrate surface was investigated hy atomic force microscope (AFM). The research shows that the hydrophobicity and the adbeslon force of the sample surface increases gradualy while the substrate surface is covered by OTS molecules as the reaction proceeds. After 15 min reaction, a cloee-pac.ked and smooth OTS self-assembled monolayer could from on the glass subetrate surface with an advancing contact angle of 105° and an interfaeial energy of 55.79 mJ.m^-2.展开更多
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...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。展开更多
基金Partially supported by Scientific Research Foundation for Returned Overseas Chinese Scholars,State Education Committee.
文摘Variation of the surface adhesion force during the formation of octadecyl trichlororilane (OTS) .self-assembled monolayer on a glass substrate surface was investigated hy atomic force microscope (AFM). The research shows that the hydrophobicity and the adbeslon force of the sample surface increases gradualy while the substrate surface is covered by OTS molecules as the reaction proceeds. After 15 min reaction, a cloee-pac.ked and smooth OTS self-assembled monolayer could from on the glass subetrate surface with an advancing contact angle of 105° and an interfaeial energy of 55.79 mJ.m^-2.
文摘通过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。
