▎ 摘　　要

NOVELTY - Preparing polymethyl methacrylate/polyethylene pyrrolidone/oxidized graphene nano fiber composite film involves placing graphene oxide in N, N-dimethylformamide ultrasonically, mixing 1-2.5 mg/mL first graphene oxide solution, adding polymethyl methacrylate and polyethylene pyrrolidone to N,N-dimethylformamide with constant stirring to obtain second solution, adding first solution into second solution with constant stirring to obtain third solution, where volume ratio of first, second and third solution is 1:5-1:9 and total concentration of polymethyl methacrylate and polyvinyl pyrrolidone in third solution is 0.25-0.35 g/ml, standing and defoaming solution, and transferring through electrostatic spinning device where spinning voltage is 10-20 kiloVolt, injection speed is 0.05-2 mm/minute, receiving distance is 10-20 cm, drying naturally to obtain polymethyl methacrylate/polyethylene pyrrolidone/oxidized graphene nano fiber composite film. USE - Method for preparing polymethyl methacrylate/polyethylene pyrrolidone/oxidized graphene nano fiber composite film. ADVANTAGE - The method enables to prepare polymethyl methacrylate/polyethylene pyrrolidone/oxidized graphene nano fiber composite film has good hydrophilicity and mechanical property.