Fabrication, antibacterial activity and cytocompatibility of quaternary ammonium chitooligosaccharide functionalized polyurethane membrane via polydopamine adhesive layer

In this study, to enhance the antibacterial activity and cytocompatibility of the electrospinning polyurethane (PU) fibrous membrane, quaternary ammonium chitooligosaccharide (G-COS) was immobilized on the fibrous membrane surface via an intermediate layer of polydopamine (PDOPA) to obtain the G-COS functionalized PU (G-C-D-PU), as a control, chitooligosaccharide (COS) functionalized PU fibrous membrane (C-D-PU) was prepared, too. Surface...