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  • Title: Functionalization of polycarbonate surfaces by grafting PEG and zwitterionic polymers with a multicomb structure.
    Author: Yang J, Lv J, Behl M, Lendlein A, Yang D, Zhang L, Shi C, Guo J, Feng Y.
    Journal: Macromol Biosci; 2013 Dec; 13(12):1681-8. PubMed ID: 24106003.
    Abstract:
    The hemocompatibility of polycarbonateurethane (PCU) surfaces is improved by decoration with poly(poly(ethylene glycol) methacrylate) (poly(PEGMA)) and zwitterionic poly(3-((2-(methacryloyloxy)ethyl)dimethylammonio)propane-1-sulfonate) (poly(DMAPS)) blocks providing a novel multicomb structure obtained by application of surface-initiated atom transfer radical polymerization (s-ATRP) conditions. The PCU-poly(PEGMA-g-DMAPS) surface shows high hydrophilicity with a low contact angle of 20.6 ± 1.8°, while PCU-poly(PEGMA-b-DMAPS) surface exhibitsed a contact angle of 30.5 ± 2.6°. Furthermore, PCU-poly(PEGMA-g-DMAPS) surface shows very low platelet adsorption indicating that multicomb structure modified PCUs are preferred candidate materials for blood-contacting materials.
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