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The present study CA/chitosan blend membrane was prepared by solvent vaporization method. The morphology of membrane was studied using Scanning Electron Microscopy (SEM) and the thermal stability using Thermo Gravimetric Analysis (TGA); and the physicochemical properties such as water content, kinetic of membrane flux, permeability and flow were investigated. Parameters on which membrane selectivity depends, are also discussed. It has also been explored the effect of electrolyte solution on ion transport properties of cellulose acetate /chitosan membrane under a concentration gradient. Water uptake in the absence and presence of electrolyte were carried out. The thermal stability of Cellulose acetate /Chitosan blends membrane to provide information regarding weight loss of the prepared membrane represent some significant steps i.e. water loss from membrane phase, followed by degradation process. First weight loss occurred at 80 to 130 C which conform evaporation of residual water from the membrane. The second degradation stage was noticed around 360.36 C, which are due to amino and hydroxyl groups. The work has been done with the object to investigate the transport properties of cellulose acetate /chitosan synthetic membrane, conducted under a concentration gradient .More ever, the water uptake and conductance experiment were carried out to investigate the effect of those electrolyte solutions. As time increases, the density of membrane functional groups increases and approaches to narrow proximity to each other. Membrane water retention capacity varies electrolyte to electrolyte. In present case it is 83.6 % for 0.01 M, NaCl; 50.9 % for 0.01M, MgCl2 and 44.0 % for 0.01M BaCl2.

ION PERMEATION STUDY ON CELLULOSE ACETATE/ CHITOSAN MEMBRANE WITH MULTIVALENT AQUEOUS ELECTROLYTE SOLUTION