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Surface functionalization of poly(ether imide) membranes with linear, methylated oligoglycerols for reducing
Maik Lange1, Steffen Braune, Karola Luetzow
1Center for Biomaterial Development, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht GmbH and Berlin-Brandenburg Centre for Regenerative Therapies, Kantstr 55, 14513 Teltow, Germany.
Abstract:
Materials for biomedical applications are often chosen for their bulk properties. Other requirements such as a hemocompatible surface shall be fulfilled by suitable chemical functionalization. Here we show, that linear, side-chain methylated oligoglycerols (OGMe) are more stable to oxidation than oligo(ethylene glycol) (OEG). Poly(ether imide) (PEI) membranes functionalized with OGMes perform at least as good as, and partially better than, OEG functionalized PEI membranes in view of protein resistance as well as thrombocyte adhesion and activation. Therefore, OGMes are highly potent surface functionalizing molecules for improving the hemocompatibility of polymers.
