▎ 摘 要
NOVELTY - Method for preparing graphite oxide and graphene/polylactic acid composite material, by (a) dissolving polyvinyl alcohol particles in deionized water at 95 degrees C in 500 ml three-necked flask with mechanical stirring and oil bath heating device to obtain an 0.08 g/ml aqueous solution, (b) dispersing required amount of graphite oxide in 50 ml ionic water, uniformly stirring, slowly pouring to a flask, uniformly stirring at 95 degrees C for 3 days, when preparing graphene/polyvinyl alcohol, adding hydrazine hydrate after stirring for 2 days, and continuously stirring for 1 day, where the mass ratio of hydrazine hydrate and graphite oxide is 1:1, and (c) adding the mixture to a mold, placing in a oven at 40 degrees C for 2 days, peeling off the formed film, uniformly drying at 8 degrees C for 2 days, testing the desired sample using film having thickness of 300 plus minus 20 mu m, where the mass percentage of graphite oxide or graphene in polyvinyl alcohol- graphite oxide and polyvinyl alcohol-graphene is 0.4, 0.8 or 1.6. USE - Method for preparing graphite oxide and graphene/polylactic acid composite material. ADVANTAGE - The method is simple and easy to control temperature.