Abstract
In this study, a novel amphiphilic comb copolymer P(poly(ethylene glycol) (PEG)-r-poly(dimethylsiloxane) (PDMS)) with mixed hydrophilic and low surface energy side chains was synthesized by the free radical polymerization method. The microstructure of the synthesized amphiphilic copolymers was characterized by Fourier transform infrared (FTIR) and the nuclear magnetic resonance proton spectra (1H NMR). The copolymers were blended with poly(ether sulfone) (PES) to fabricate low-fouling ultrafiltration membranes through nonsolvent induced phase separation (NIPS). The surface distribution of the hydrophilic PEG segments and hydrophobic PDMS segments on the membranes via surface segregation during the NIPS process was confirmed by the X-ray photoelectron spectroscopy (XPS), the wetting property, and the surface energy measurements. The multidefense mechanisms from fouling resistant to fouling release for the membranes modified by amphiphilic copolymers P(PEG-r-PDMS) were investigated with bovine serum albumin...
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