The preparation and characterization of novel charged polyacrylonitrile/PES-C blend membranes used for ultrafiltration

摘要: Abstract 2-Acrylamido-2-methylpropane-sulfonic acid (AMPS) was incorporated into polyacrylonitrile by water-phase precipitation copolymerization successfully. The chemical structure, molecular weight and composition of the synthesized copolymer were characterized IR, viscosity measurement elemental analysis, respectively. Furthermore, blends phenolphthalein poly(ether sulfone) (PES-C) with different dissolved in dimethylformamide (DMF) used to prepared ultrafiltration membranes means classical phase inversion process. And then, effect blend on hydrophilicity, electrical properties, morphologies permeation properties investigated elaborately. static water contact angle membrane surface decreased from 78.7 ± 0.9° 42.6 ± 3.5° increase PAN-co-AMPS 0 20%. It found that salt retention influenced intensely both content charged pH feed solution. In addition, FESEM images cross-section displayed pore size decreases, top layer became thicker finger-like macrovoids disappeared gradually as added. As a result, flux is 230 40 L/m 2  h rejection PEG20000 PEG35000 increased 0.129 0.7389, 0.5528 0.91, respectively (as measured at 100 kPa).