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2010 ORS Poster: Self-Initiated Surface Graft Polymerization of PMPC on PEEK

    • Reference:
    • Kyomoto, M, Moro, T, Takatori, Y, Kawaguchi, H, Nakamura, K, Ishihara, K. Self-initiated surface graft polymerization of poly(2-methacryloyloxyethyl phosphorylcholine) on PEEK and carbon fiber reinforced PEEK for orthopaedic and spinal applications. Transactions of the Orthopaedic Research Society, Poster 1192, 2010.
    • Keywords:
    • PEEK, CFR-PEEK, surface modification, MPC, PMPC, surface grafting, friction, wear
    • Permissions:
    • A PDF of the conference abstract can be downloaded directly from the ORS website. The PDF of the conference poster is made available on www.medicalpeek.org with the permission of the authors.

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Abstract

Researchers from the University of Tokyo have developed and characterized highly hydrophilic and biocompatible nanometer-scale modified PEEK and CFR-PEEK by graft polymerization of poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC). Surface graft polymerization was self-initiated by the generation of semibenzopinacol
containing radicals of the benzophenone units in PEEK, which acts as a photo-initiator during the grafting polymerization. The wettability of PMPC-grafted PEEK was considerably greater than that of the untreated PEEK, because of the presence of a nanometer-scaled PMPC layer: MPC is a highly hydrophilic compound, while PMPC is water-soluble. The coefficient of dynamic friction was dependent on the wettability. A significant reduction in static water-contact angle of PMPC-grafted PEEK resulted in a substantial improvement in friction property. In addition, the amount of adsorbed proteins on the PMPC-grafted PEEK was considerably lower than that of the untreated PEEK.

Scheme of preparation of PMPC-grafted PEEK.

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