THIN FILM NANOCOMPOSITE MEMBRANES FOR DESALINATION AND METHOD FOR PREPARING THE SAME

摘要

The present invention relates to an ultrathin film type nanocomposite separation membrane, and a manufacturing method of the same. The ultrathin film type nanocomposite separation membrane for seawater desalination comprises 1) a polyamide based polymer activated layer, 2) a polyether sulfone supporting membrane, 3) an external supporting body, and 4) a carbon nanotube. The ultrathin film type nanocomposite separation membrane of the present invention rapidly increases the hydrophilicity of a porous supporting membrane, thereby improving the water permeability of the entire separation membrane by more than two times. Additionally, a supporting membrane which has been exposed to the atmosphere for a long time can be used as a lower body of the ultrathin film type separation membrane by the physicochemical action of the functionalized carbon nanotube.