▎ 摘　　要

NOVELTY - Preparing micro-nano recycled corrugated fiber/graphene composite membrane involves: (I) preparing micro-nano recycled corrugated fiber by weighing corrugated paper, pouring paper pulp fiber into sodium hydroxide solution, sealing, filtering, heating; weighing potassium hydroxide/4.5 g sodium chlorite/4 ml glacial acetic acid; (II) preparing graphene oxide by taking 100 ml concentrated sulfuric acid, adding 5 g graphite, 15 g potassium permanganate; and (III) preparing graphene/micro and nano biomass cellulose membrane by taking graphene oxide solution and 300 ml cellulose solution. USE - For preparation of micro-nano recycled corrugated fiber/graphene composite membrane (claimed). ADVANTAGE - The package is a green environment-friendly material; has more excellent function; and provides wide prospect for application of the composite material. The graphene composite material gives more excellent functionality for composite applications. DETAILED DESCRIPTION - Preparation of micro-nano recycled corrugated fiber/graphene composite membrane, involves: (I) preparing micro-nano recycled corrugated fiber, involving: 1) weighing corrugated paper, diluting solution with distilled water, soaking, stirring using household food stirrer into corrugated paper pulp and filtering, adding 500 ml distilled water; 2) pouring paper pulp fiber into 250 ml beaker, pouring into 150 ml sodium hydroxide solution, 10 g plastic wrap for sealing the cup opening and putting into 90 degrees C constant temperature water bath, heating for 2 hours, vacuum filtering, washing with distilled water repeatedly to remove brown cellulose hemicellulose, until filter liquid is neutral; 3) weighing 4.5 g sodium chlorite and 4 ml glacial acetic acid, uniformly stirring, using plastic wrap for sealing the cup opening, heating at 75 degrees C in water bath for 1 hour, continuously stirring the reaction and adding 4.5 g sodium chlorite and 4 ml glacial acetic acid, continuously heating at 75 degrees C in water bath for 1 hour, filtering using distilled water and remove residual lignin from corrugated paper to obtain brown cellulose fiber; 4) weighing potassium hydroxide, heating at 90 degrees C, sealing plastic wrap and continuously stirring, vacuum filtering using distilled water until neutral; 5) weighing 4.5 g sodium chlorite and 4 ml of glacial acetic acid, uniformly stirring, sealing plastic wrap, heating at 75 degrees C, stirring; 6) measuring hydrochloric acid, sealing 10 ml plastic wrap heating at 80 degrees C in water bath for 2 hours, filtering; and 7) adding the prepared sample to 1 mass% of suspension, grinding, then performing ultrasonic treatment for 40 minutes, centrifuging for 20 minutes to obtain micro-nano recycled corrugated fiber; (II) preparing graphene oxide, involving: taking 100 ml concentrated sulfuric acid, stirring, adding 5 g graphite, then slowly adding 15 g potassium permanganate, heating for half an hour, continuously stirring and reacting for 4 hours, in a red green, slowly adding 220 ml de-ionized water, keeping temperature less than 100 degrees C, slowly dropwise adding hydrogen peroxide into yellow solution, filtering and washing, detecting there is no white precipitate, no sulfate ion, controlling temperature at 55 degrees C for 48-72 hours to obtain sample, dissolving the prepared sample in the deionized water to obtain graphene oxide solution; and (III) preparing graphene/micro and nano biomass cellulose membrane, involving: taking graphene oxide solution and 300 ml cellulose solution, mixing at largest speed of 37000 revolution/minute in high speed stirrer, the paper fiber and graphene generated by high-speed rotation condition together under the action of the paper pulp fiber is a fiber and at the same time a grapheme produce emulsification and cellulose nano fiber is fully mixed and dispersed, and then filtering by vacuum filter to obtain the graphene/biomass cellulose film.