Poly(amidoamine) modified cellulose acetate ultrafiltration membrane #
A controlled membrane fouling was requested to subject as ultrafiltration in the textile industries to treat its wastewater and reject dyes. For this purpose cellulose acetate polymer which widely used is taken and modified with second generation of poly(amidoamine) dendrimer. This polymer will enhance the hydrophilicity of polymer and in the precipitating process, based on Loeb-Sourirajan method of preparing membrane , the mass transfer happens quiet slower and macro-voids appear after drowning the cast polymer solution in the precipitation bath. Moreover, generation of surface charges on the membrane surface help to prevent dyes to absorb to the membrane structure and decrease the internal fouling.
