Abstract
The formation of interpolymer complex of cellulose acetate phthalate (CAP) with polyvinylpyrrolidone (PVP) was investigated by turbidity and IR measurements. The complex is formed through hydrogen bonding between carboxyl groups of CAP and carbonyl groups of PVP. Reverse osmosis properties of the interpolymer membrane (1: 1) prepared from CAP and PVP were investigated using aqueous solutions of organic and inorganic compounds. This membrane shows high water permeability, higher rejection for hydrophobic solute than hydrophilic one, but lower rejection for salts, compared with the CAP membrane.
