Fabrication of polyphenylsulfone/polyetherimide blend membranes for ultrafiltration applications: The effects of blending ratio on membrane properties and humic acid removal performance

► An antifouling ultrafiltration blend membrane was prepared via phase inversion method. ► Negatively charged PPSU exhibited good resistance to the negatively charged HA. ► Positively charged/hydrophilic PEI exhibited a hydrophilic surface with low fouling resistance.