聚砜中空纤维膜式人工肺的等离子体改性研究
作者:刘耀东1,黄鑫1,王伟平1,虞文魁2,李磊
单位: 1、南京大学化学化工学院,江苏南京 210093,2、南京大学医学院,江苏南京 210093
关键词: 聚砜中空纤维膜;人工肺;等离子体改性;肝素钠;血液相容性
出版年,卷(期):页码: 2015,35(4):35-39

摘要:
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40W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。
 
AA and heparin were grafted onto the surface of PSfhollow fiber membranesfor artificial lung by low temperature plasma technology to improvetheir blood compatibility. The contact angle and grafting degree of modified PSf membrane was optimized by being treated for process time of 60s with Aratmosphere at power of 40 W.The amounts of adsorbed BSA and adhesive platelets on the grafted PSf membranes decreasedsignificantly.Besides, the experimental results of gas-liquid transfer indicated that the modified membrane retained excellent gas permeation flux of PSfmembrane, which could achievebasically the gas exchange transmission capacity of artificial lung.
 
刘耀东(1990—),男,安徽省铜陵人,硕士研究生,研究方向为膜分离技术;李磊,男,副教授,

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