“…The polysulfone-based membrane was prepared via a phase inversion process, an immersion precipitation technique using polysulfone (Psf) M w = 35,000 g/mol (Sigma Aldrich) as the base polymer, and 1-methyl-2-pyrrolidone (NMP), purity >99.5% (Merck), as a solvent. Polyvinylpyrrolidone (PVP) K30 (40,000 g/mol) (Fluka, Paris, France) and polyethylene glycol (PEG) 400, Mw = 3500-4000 g/mol (Scharlau, Hamburg, Germany) were used as additives [25]. Ultrapure water was obtained using Milli-Q Integral 15 (Merck, Millipore, Darmstadt, Germany) equipment and was used as a non-solvent in the coagulation bath.…”