医用聚醚氨酯经Si 离子注入使表面的生物医学性质得到不同程度的改善;材料表面的一些基团发生断键;在低剂量注入下材料中自由基数量在10~(12)—10~(14)/cm~3范围内,而且微相分离程度明显提高。
Biomedical properties of medical polyurethane at surface were improved in va-rying degrees and some chemical bonds at surface were broken up after Si~+ implantation。Atthe same time,the number of radicals was not beyond a scope of 10~(12)—10~(14)/cm~2 andm
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