Polyarylene thioether sulfone/sulfonated sulfone nanofiltration membrane with enhancement of rejection and permeability via molecular design☆

Further improvement of nanofiltration is significantly hindered by the trade-off between the permeability and selectivity. This study proposes a new strategy of significantly improving performance by enhancing the effective membrane area, hydrophilicity, membrane porosity, negative charges of a membrane, and decreasing pore size through designing a new polyarylene thioether sulfone/sulfonated sulfone (PATS/SS) copolymer. Via copolymerization,...