Further modification of oil-water separation membrane based on chitosan and titanium dioxide

摘要

In this paper, chitosan/nano-TiO_2-modified liquid was coated on the surface of cellulose membrane by negative pressure suction filtration and a new method of preparing oil-water separation membrane was completed based on the pure nitrocellulose membrane. The performance parameters of cellulose composite membrane modified by chitosan and titanium dioxide with different concentration ratios were studied in terms of microstructure, element distribution and composition, wettability, using SEM, XPS, contact angle and other characterization methods. The optimal ratio of chitosan and titanium dioxide in the modified solution was selected to determine the optimal process parameters for the preparation of the new membrane. Because of the existence of nano-TiO_2 particles in the new membrane, further study the effect of light on the membrane flux is required.