THE EFFECTS OF POROUS AND SOLID FILLERS ON THE PERMEABILITY OF CELLULOSE ACETATE MEMBRANES

摘要

Several types of filled cellulose acetate membranes were prepared to determine the effect of filler properties and polymer properties on permeability of the composite materials. Casting procedures were chosen to give a dense cellulose acetate phase and a uniform distribution of filler throughout the membrane. The composite membranes were evaluated in a reverse osmosis cell and in extraction or desorption tests at ambient conditions. Salt and water permeabilities were measured on filled and unfilled membranes of varying acetyl content.