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UV-induced graft polymerization of acrylic acid(AA) on poly(ether ether ketone)(PEEK) films was carried out to introduce ―COOH for the subsequent immobilization of bovine serum albumin(BSA).BSA was introduced on PEEK surface based on the condensation reaction between ―NH 2 and ―COOH.The modified surface(PEEK-BSA) was characterized by energy-disperse spectrometry(EDS),X-ray photoelectron spectroscopy(XPS),water contact angle measurement and UV spectrum analysis.The contact angle was found to decrease from 104° for the virgin PEEK films to 63° for the BSA-immobilized PEEK films,demonstrating a significant improvement of surface hydrophilicity.Moreover,the appearance of nitrogen on PEEK film confirmed by XPS and EDS indicates the immobilization of BSA on PEEK surface.
UV-induced graft polymerization of acrylic acid (AA) on poly (ether ether ketone) (PEEK) films was carried out to introduce-COOH for the subsequent immobilization of bovine serum albumin (BSA) .BSA was introduced on PEEK surface based on the condensation reaction between -NH 2 and -COOH.The modified surface (PEEK-BSA) was characterized by energy-disperse spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), water contact angle measurement and UV spectrum analysis. contact angle was found to decrease from 104 ° for the virgin PEEK films to 63 ° for the BSA-immobilized PEEK films, demonstrating a significant improvement of surface hydrophilicity. More over, the appearance of nitrogen on PEEK films confirmed by XPS and EDS indicates the immobilization of BSA on PEEK surface.