Low fouling negatively charged hybrid ultrafiltration membranes for protein separation from sulfonated poly(arylene ether sulfone) block copolymer and functionalized multiwalled carbon nanotubes

摘要: Abstract Low fouling negatively charged hybrid ultrafiltration membranes with adjustable charge density were fabricated from blends of poly(arylene ether sulfone) (PAES) block copolymer and the sulfonated (S-PAES) in combination different fractions sulfonic acid functionalized multiwalled carbon nanotubes (MWCNT-SO 3 H) by non-solvent induced phase separation method. Porous membrane morphologies, structure surface properties characterized comprehensively using scanning electron microscopy, Fourier transform infrared spectroscopy attenuated total reflection mode, as well contact angle zeta potential measurements. Results confirmed that hydrophilic studied pH range 3–10. The water permeabilities increased protein resistances dependent on fraction MWCNT-SO H membranes. transmission function value was for two model proteins (bovine serum albumin myoglobin) found to be controlled size exclusion content H. highest at their isoelectric points obtained containing 2 wt% relative polymer. selectivity binary mixture could systematically increasing Consequently, trade-off relationship between permeability conventional where is based solely overcome performance tuned a small functional additive.