Effect of polyethylene glycol concentration as an additive on performance of polyether sulfone dialysis membranes

Dialysis membranes were prepared by phase inversion method. The membranes have been fabricated of polyethersulfone (PES) as polymer, Dimethylacetamide (DMAc) as solvent and different concentration of polyethylene glycol (PEG) 400 Da as additive. In this study, the pure water flux, hydraulic resistance, porosity and water content of membranes were determined. Urea and creatinine removal of membranes were investigated in 12 hours. The results showed that by increasing concentration of PEG additive from 4.5% to 13.5%, the porosity and water content were increased while they reduce the pure water flux and hydraulic resistance. The performance of membrane was improved by increasing the concentration of PEG

Keywords:

Dialysis PES membrane , PEG additive , characterization , membrane performance , urea and creatinine removal