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Surface Functionalization of Poly(ether imide) Membranes with Linear, Methylated Oligoglycerols for Reducing Thrombogenicity

2012; Wiley; Volume: 33; Issue: 17 Linguagem: Inglês

10.1002/marc.201200426

1521-3927

Maik Lange, S. Braune, Karola Lüetzow, K. Richau, Nico Scharnagl, Marie Weinhart, Axel T. Neffe, F. Jung, Rainer Haag, Andreas Lendlein,

Fuel Cells and Related Materials

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.