利用低温等离子体技术在用于膜式人工肺的聚砜(PSf)中空纤维膜表面接枝丙烯酸(AA)和肝素,通过改性以提高膜材料的血液相容性.通过改性前后膜的接触角及接枝率测试结果比较,得出优化的改性条件,即选用氩气(Ar)作为等离子体气源,处理功率为40 W及处理时间为60s.改性后膜材料对牛血清白蛋白(BSA)及血小板黏附量显著减少.此外模拟人工肺进行气液双侧传输测试的结果表明,改性后膜材料保持了初始膜优良的气体传输性能,基本符合常见临床膜式人工肺标准.
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