Fouling-tolerant polysulfone-poly(ethylene oxide) random copolymer ultrafiltration membranes

► Fouling-tolerant PSF-PEO random ultrafiltration copolymer membranes. ► Hydrophilic PEO is enriched on the membrane surface during membrane formation. ► PEO in copolymers helps reduce fouling against proteins and oily wastewater.