▎ 摘　　要

NOVELTY - Preparing graphene oxide/nano cellulose/polyvinyl alcohol composite film involves preparing nano cellulose and preparing graphene oxide. 13.56 ml of 5.9-3.919 g/L of Nano cellulose suspension and polyvinyl alcohol are dissolved in 86.44 ml of deionized water with stirring at a rate of 500 revolutions/minute and heated in water bath at 90 degrees C for 2 hours to obtain nano cellulose/polyvinyl alcohol solution followed by the addition of graphene oxide solution comprising 0.1-0.3 wt.% of graphene oxide. The mixture is ultrasonicated for 30 minutes to obtain film forming solution. USE - Method for preparing graphene oxide/nano cellulose/polyvinyl alcohol composite film for composite package film (claimed). ADVANTAGE - The method enables to prepare graphene oxide/nano cellulose/polyvinyl alcohol composite film which has high light transmittance. DETAILED DESCRIPTION - Preparing graphene oxide/nano cellulose/polyvinyl alcohol composite film involves nano cellulose and preparing graphene oxide. 13.56 ml of 5.9-3.919 g/L of Nano cellulose suspension and polyvinyl alcohol are dissolved in 86.44 ml of deionized water with stirring at a rate of 500 revolutions/minute and heated in water bath at 90 degrees C for 2 hours to obtain nano cellulose/polyvinyl alcohol solution followed by the addition of graphene oxide solution comprising 0.1-0.3 wt.% of graphene oxide. The mixture is ultrasonicated for 30 minutes to obtain film forming solution which is paved on flat glass plate and dried at room temperature to obtain graphene oxide/nano cellulose/polyvinyl alcohol composite film.