▎ 摘　　要

NOVELTY - Preparing and cleaning composite film with light responsiveness and temperature sensitivity comprises grafting polyvinylidene fluoride to obtain poly (vinylidene fluoride)-graft-poly (N-isopropylacrylamide) (PVDF-g-PNIPAAm), using PVDF-g-PNIPAm and graphene oxide (GO) and blending to obtain composite film, where the PVDF is main chain, and PNIPAm is branched chain, inserting the sheet-shaped GO in the composite film, and where the composite film has finished the filtering test which is operated under the illumination of light cleaning, and the highest water flux recovery rate can reach 95%. USE - The method is useful for preparing and cleaning composite film with light responsiveness and temperature sensitivity. ADVANTAGE - The film: enables preparation of composite film with excellent photo-responsive property and temperature-sensitive property; and washes out bovine serum protein molecule blocked in the film hole under the pressure of the external water until to reach the purpose of light cleaning.