【摘 要】
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In this study,polysulfone(PSF) asymmetric membrane was fabricated and modified into biocompatible membrane material used for membrane oxygeantor.Atmospheric pressure plasma technology is used to pretr
【机 构】
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Department of chemical engineering,Nanjing university,Nanjing 210-093.,China
【出 处】
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第七届国际分离科学与技术会议(Proceedings of the 7th International Conferen
论文部分内容阅读
In this study,polysulfone(PSF) asymmetric membrane was fabricated and modified into biocompatible membrane material used for membrane oxygeantor.Atmospheric pressure plasma technology is used to pretreat PSF membrane for activating material surface,then PEG and heparin were grafted onto PSF membrane surface,which were marked as PSF-PEG,PSF-Hep,PSF-PEG-Hep,respectively [1].The modified membranes were characterized by ATR-FTIR and XPS to confirm successful immobilization of PEG and heparin on its surface.Permeation rate of oxygen and carbon dioxide,critical water permeability pressure,gas-liquid transport capacity were tested through all the membranes above [2-3].Blood compatibility was evaluated by measuring adhesion of platelets,adsorption of bovine serum albumin,and the activated partial thromboplastin time (APTT)[4-5].The results indicated that modified PSF membrane maintained its original chemical performance,and antithrombogenicity was improved remarkably as well.Besides,compared with PSF-Hep membrane,PSF-PEG-Hep membrane showed superior performance,which indicated that PEG spacer grafted on the membrane was benefit for heparin to improve biocompatibility.
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