▎ 摘　　要

NOVELTY - Method comprises (a) dissolving copper sulfate in the deionized water, forming copper sulfate solution A, (b) dissolving polyvinyl alcohol into deionized water alcohol solution B, (c) adding the solution B in a magnetic stirrer, stirring, dropping the solution A, dissolving the copper ion in the B to obtain solution C, (d) dissolving the oxide graphene in deionized water, adding the solution C into the suspension, sealing, firstly freezing and unfreezing, (e) washing, centrifuging, freezing and drying to obtain the oxidized graphene/copper composite antibacterial agent, (f) mixing the oxidized graphene/copper composite anti-bacterial agent and polylactic acid to obtain the composite particle antibacterial (g) mixing the composite anti-bacterial the polylactic acid (PLA) to obtain the degradable grapheme, (h) uniformly mixing starch, PLA and auxiliary agent, extruding and cutting, rolling to obtain the mixed degradable sheet, (i) heating the soften-layer sheet, molding, and cutting. USE - The graphene box is useful in field of food packaging, disposable lunch box, food and beverage package and high added value film, biological medical, drug controlled release carrier, orthopedic internal fixing field material, engineering support, medicine slow release control material and ophthalmic material. ADVANTAGE - The lunch box: has better performance, anti-bacterial time, and reduces the weight of the lunch box. The method is simple, has excellent performance, and is suitable for industrial production. DETAILED DESCRIPTION - Preparing degradable graphene box comprises (a) dissolving copper sulfate in the deionized water, forming copper sulfate solution A, (b) keeping the temperature of the polyvinyl alcohol and stirring, dissolving the polyvinyl alcohol into deionized water alcohol solution B, (c) adding the solution B in a magnetic stirrer, stirring, dropping the solution A, dissolving the copper ion in the B to obtain solution C, (d) dissolving the oxide graphene in deionized water, ultrasonically stirring to form stable dispersed suspension, adding the solution C into the suspension, transferring to a long glass tube, sealing, firstly freezing and unfreezing, repeating for multiple times to form oxidized graphene/copper composite material, (e) washing, centrifuging, freezing and drying to obtain the oxidized graphene/copper composite antibacterial agent, (f) mixing the oxidized graphene/copper composite anti-bacterial agent polylactic acid to obtain the composite particle antibacterial (g) mixing the composite anti-bacterial the polylactic acid (PLA) uniformly, extruding and cutting, rolling to obtain the degradable grapheme, (h) uniformly mixing the starch, PLA and the auxiliary agent extruding and cutting, rolling to obtain the mixed degradable sheet, (i) placing a layer of mixed degradable sheet between the graphene layers of the degradable sheet, heating the soften-layer sheet, molding, and cutting.