摘要
将所合成的生物相容性单体2-甲基丙烯酰氧乙基磷酸胆碱(MPC)通过紫外光接枝到聚乙烯表面,以改善其表面的润滑性、生物相容性以及耐磨性。通过IR、ATR-FTIR、XPS、SEM以及722分光光度计等手段检测了接枝前后聚乙烯样品的相关性能,并研究了接枝前后聚乙烯样品在蒸馏水、生理盐水润滑下的摩擦磨损性能。结果表明,聚乙烯表面可接枝MPC,且接枝量随光照时间的增加而增大;接触角由64°～76°变成15°～26°,接触角大小随接枝量的增大而减小;接枝后样品的溶血率比接枝前低,且样品表面几乎没有血小板;接枝后样品摩擦因数变小,体积磨损率降低。
In order to improve lubricating ability,biocompatibility,and wear resistance,a synthesized biocompatible monomer,2-methacryloyloxyethyl phosphorylcholine(MPC),was grafted upon the surface of polyethylene(PE)by UV Radiation.Related properties were studied by IR,ATR-FTIR,XPS,SEM and 722 spectrophotometer.The friction properties of PE pieces,before and after grafted water-soluble polymer,against Al2O3 and lubricated by physiological saline and distilled water were investigated.The experimental results show tha...
出处
《润滑与密封》
CAS
CSCD
北大核心
2008年第4期42-46,50,共6页
Lubrication Engineering
