【摘 要】
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Modification of poly(tetrafluoroethylene)(PTFE)films with 2-methacryloyloxyethyl phosphorylcho-line(MPC)was performed by low-temperature plasma treatment and gr
【机 构】
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School of Material Science and Engineering
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Modification of poly(tetrafluoroethylene)(PTFE)films with 2-methacryloyloxyethyl phosphorylcho-line(MPC)was performed by low-temperature plasma treatment and grafting polymerization. Surface properties of PTFE were characterized by attenuated total reflectance Fourier transform infrared(ATR-FTIR)spectra, X-ray photoelectron spectroscopy(XPS), and static contact angle. The results show that MPC has been grafted onto PTFE film surface successfully. Contact angle for the modified PTFE films in the water decreased from 108°to 58.25°, while surface energy increased from 17.52 mN/m to 45.47 mN/m. The effects of plasma treatment time, monomer concentration and grafting time on degree of grafting were determined. In the meanwhile, blood compati-bility of the PTFE films was studied by checking thrombogenic time of blood plasma.
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