THE EFFECT OF THE POLYMER CONCENTRATION O N THE ULTRAFILTRATION MEMBRANE

This work deals with the results of investigations concerning the stru cture and transport characteristics of polysulfone membranes made from different polymer solution concentrations. Asymmetric membranes were prepared by the wet phase inversion process. The integrally-skinned st ructure of each membrane was characterized using scanning electronic m icroscopy; the permeability was evaluated by measurements of water flu x and ultrafiltration test with polydisperse polymer solutes. It was f ound that, there is a linear correlation between the water flux and po lymer concentration. The results showed that the polymer concentration solution have a great effect on the molecular weight cut-off and memb rane structure.