摘要
本文研究了经硅离子束轰击的医用聚醚氨脂材料。结果表明材料表面浸润性和结构都发生了明显变化。在室温下用40,60,80,100keV能量的硅离子在2×10^(13)～2×10^(16)ions/cm^2剂量范围内分别对材料进行注入。表面浸润性是通过测量材料表面和蒸馏水的接触角变化完成的。结果表明随着剂量的增加,水接触角从82.1°下降到68.8°。用扫描电镜(SEM)已观察到经注入的材料表面变得粗糙。电子能谱化学分析(ESCA)和电子自旋共振(ESR)分析表明:注入的硅离子打断了材料表面的某些化学键而产生了一些新的自由基,这是表面改性的主要原因。
The wettability and surface structure of ion implanted medical polyure-thane wert studied. Si ion implantation was performed at energies of 40, 60, 80, 100keV at room temperature. The doses ranged from 2×1013 to 2×1016 ions/cm2. The wettability was investigated by measuring the contact angle between the measured material surface and distilled water The result showed that contact angle of water decreased from 82. 1 to 68.8 degree as the dose increased. The SEM photos showed that the surface was roughened by ion beam bombardment. The results of ESCA and ESR indicated that the implanted Si ions broke up some chemical bond of surface and produced some new free radicals which may be' the main reason of surface modification.
出处
《微细加工技术》
1991年第4期39-43,共5页
Microfabrication Technology
基金
天津市科学基金
关键词
聚醚氨酯
硅离子注入
浸润性
结构
Si ion implantation
Polyurethane
Wettability
Biocompatibility
