ABSTRACT
I. INTRODUCTION Charge-mosaic membranes composed of cation-and anion-permeable micro domains have been of interest in membrane technology because of their unique transport properties. Figure 1 shows the two types of three-dimensional struc ture characteristic of the membrane. Homogeneous cation-or anion-exchange membranes allow their counterions to pass through the membrane but retard the permeation of electrolytes. Since charge-mosaic membranes have respec tive pathways for anions and cations, they have high permeability for electro lytes and can thus be used for the dialytic and piezodialytic separation of electrolytes from mixed aqueous solutions of electrolytes, such as sodium chlo ride, and nonelectrolytes, such as sugar.
