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    Photochemically prepared polysulfone/poly (ethylene glycol) amphiphilic networks and their biomolecule adsorption properties

    Year: 2011

    Journal: Colloids and Surfaces B: Biointerfaces 2011, 88 (1) pp 265-270, 20121211

    Authors: Cemil Dizman, Dilek Odaci Demirkol, Sahin Ates, Lokman Torun, Serhan Sakarya, Suna Timur, Yusuf Yagci

    Organizations: Istanbul Technical University, Faculty of Science and Letters, Department of Chemistry, Maslak, 34469 Istanbul, Turkey, TUBITAK Marmara Research Center, Chemistry Institute, Gebze, 41470 Kocaeli, Turkey, Ege University, Faculty of Science, Biochemistry Department, Bornova, 35100 Izmir, Turkey, Department of Infectious Diseases and Clinical Microbiology, Adnan Menderes University School of Medicine, 09100 Aydin, Turkey

    Polysulfone/poly(ethyleneglycol) amphiphilicnetworks were prepared via in situ photo-induced free radical crosslinking polymerization. First, the hydrophobic polysulfone diacrylate (PSU-DA) oligomer was synthesized by condensation polymerization and subsequent esterification processes. Then, the obtained oligomer was co-crosslinked with the hydrophilic poly(ethyleneglycol) diacrylate (PEG-DA) or poly(ethyleneglycol) methyl ether acrylate (PEG-MA) at different feed ratios. In the case of PEG-MA, the resulting network possessed dangling pendant hydrophilic chains on the crosslinked surface. The structure and the morphology of the membranes were characterized by attenuated total reflection infrared spectroscopy (ATR-IR) and scanning electron microscopy (SEM). The enhancement of surface hydrophilicity was investigated by water contact angle measurements. The biomoleculeadsorption properties of these networks were also studied. The biomolecules easily adsorbed on the surface of the hydrophobic polysulfonenetworks whereas dangling hydrophilic chains on the surface prevented the adsorption of the biomolecules.