Abstract
Hydrophilic material 2-methoxyethylacrylate (MEA) was grafted onto polysulfone (PSF) membrane via Michael addition reaction. The 1H nuclear magnetic resonance (1H NMR), Attenuated total reflectance-Fourier transform infrared spectroscope (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) characterization of the modified membrane proved that MEA had been successfully grafted onto PSF membrane surface. The water contact angle of the membrane surface was tested. The results showed that the water contact angle changed from 76° to 59.5°, which means that the hydrophilicity of the modified membrane was improved. A series of blood compatibility tests including bovine serum protein adsorption, platelet adhesion, prothrombin time (PT), partial thromboplastin time (APTT) and thrombin time (TT) were carried out on PSF membrane and the modified PSF membrane with highest grafted density of MEA. All of the results indicate that MEA plays an important role in improving the blood compatibility of PSF membrane.
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