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Sulfonated polysulfone (SPS) was synthesized from polysulfone resin using sulfuric anhydride-triethyl phosphate complex. The SPS was dissolved in N-methyl-2-pyrrolidone (NMP) using LiNO 3 as a swelling agent. The resultant SPS dope was casted on a glass plate. An optimum ratio of SPS, NMP and LiNO 3 was 1:5:0.2 for making an UF membrane. The solvent was evaporated for 30min, at 338K,...
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