Preparation of PVDF-g-PVP@GO Membrane by Homogeneous Solution Co-irradiation and Its Anti-Fouling Performance

PVDF-g-PVP@GO modified membrane was prepared through a non-solvent induced phase separation method (NIPS) by homogeneous solution co-irradiation and blending with graphene oxide (GO). Fourier transform infrared spectroscopy (FTIR) of different membranes confirmed the stable loading of GO on the membrane. The influence of GO loading on the cross-section and surface morphology and contact angle (CA) of the membrane were analyzed by scanning electron microscope (SEM) and CA tester, respectively. The results showed that GO loading could improve the hydrophilicity of the membrane, but excessive loading would also bring about defects in the membrane structure. The results of membrane permeation, filtration, and anti-fouling experiments also showed that GO loading reduced the water and BSA aqueous solution flux of the membrane to some extent, but proper GO loading would improve the filtration and anti-fouling performance of the membrane. This study provides certain reference value for the promotion of membrane performance.