Abstract
Graft copolymers of poly(vinylidene fluoride) (PVDF) with poly[2-(N,N-dimethylamino)ethyl methacrylate] (PDMAEMA) side chains (PVDF-g-PDMAEMA copolymers) were synthesized via activators generated by electron transfer for atom transfer radical polymerization (AGET-ATRP) of 2-(N,N-dimethylamino)ethyl methacrylate (DMAEMA) directly from the secondary fluorine atoms on the PVDF backbone. Microporous membranes were fabricated from the PVDF-g-PDMAEMA amphiphilic copolymers by phase inversion in an aqueous medium. After quaternization by propargyl bromide, the resulting PVDF-g-PQDMAEMA membrane and pore surfaces bearing pendant propargyl moieties could be further functionalized via surface-initiated alkyne–azide click reaction of azido-terminated hyperbranched polyglycerols (HPG-N3) to form the PVDF-g-P[QDMAEMA-click-HPG] membranes. The PVDF-g-P[QDMAEMA-click-HPG] membranes exhibit good resistance to protein adsorption and fouling. Alternatively, alkyne–azide click reaction of azido-terminated polyethylenimine (...
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