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摘要：
Multi-layer packaging comprising a plurality of layers of packaging materials, wherein one or more layers amongst the plurality of layers comprise a film comprising at least one of: graphene or graphene oxide, and wherein the multi-layer packaging is impermeable to moisture or fluids. The packaging may be self-recyclable and the graphene/graphene oxide layers may be between 0.5 and 10 µm. Also included are claims to the manufacture of such a multilayer material and claims to the manufacture of graphene and graphene oxide layers. The former comprising dispersing graphene in an organic solvent, adding a stabilizer, sonicating to provide an exfoliated stabilized graphene and then filtering. The layer may be transferred from the filter which comprises a first surface to some other second surface. The method of forming a graphene oxide layer comprises diluting graphene oxide paste with deionized water sonicating and filtering this solution to obtain a layer.
权利要求：
CLAIMS
1. A multi-layer packaging comprising a plurality of layers of packaging materials, wherein one or more layers amongst the plurality of layers comprise a film comprising at least one of: graphene or graphene oxide, and wherein the multi-layer packaging is impermeable to moisture or fluids.
2. A multi-layer packaging according to claim 1, wherein the film comprises at least one layer of graphene, wherein the film has a first thickness in a range of 0.5 ym to 10 pm, and wherein the film is impermeable to moisture or fluids.
3. A multi-layer packaging according to claim 2, wherein when the multi-layer packaging is subjected to a recycling process, the film comprising the at least one layer of graphene provides self-recyclable properties to the multi-layer packaging.
4. A multi-layer packaging according to claim 1, wherein the film comprises at least one layer of graphene oxide, wherein the film has a second thickness in a range of 0.5 ym to 20 ym, and wherein the film is impermeable to moisture or fluids.
5. A multi-layer packaging according to claim 4, wherein when the multi-layer packaging is subjected to a recycling process, the film comprising the at least one layer of graphene oxide provides self- recyclable properties to the multi-layer packaging.
6. A method of manufacturing a multi-layer packaging, the method comprising:
manufacturing each of a plurality of layers of packaging materials that constitute the multi-layer packaging, wherein one or more layers amongst the plurality of layers comprise a film comprising at least one
of: graphene or graphene oxide, and wherein the film is impermeable to moisture or fluids; and
assembling the plurality of layers in a required manner to form the multi-layer packaging.
Z A method of manufacturing a film comprising graphene, the method comprising:
dispersing the graphene in an organic solvent for preparing a graphene solution;
adding a stabilizer in the graphene solution for obtaining a stabilized graphene solution;
sonicating the stabilized graphene solution for a first time duration for preparing an exfoliated stabilized graphene solution; and
filtering the exfoliated stabilized graphene solution for obtaining the film on a first surface, wherein the film has a first thickness in a range of 0.5 pm to 10 pm, and wherein the film comprises at least one layer of the graphene.
8. A method according to claim 7, wherein the step of filtering the exfoliated stabilized graphene solution is performed using at least one first filter membrane, the first surface being a surface of the at least one first filter membrane, and wherein a first volume of the exfoliated stabilized graphene solution is passed through the at least one first filter membrane resulting in deposition of the film on the surface of the at least one first filter membrane.
S. A method according to claim 7 or 8, further comprising transferring the film obtained on the first surface to a second surface.
10. A method of manufacturing a film comprising graphene oxide, the method comprising:
diluting graphite oxide paste in deionized (DI) water for obtaining a graphene oxide solution;
sonicating the graphene oxide solution for a second time duration for preparing an exfoliated graphene oxide solution; and
filtering the exfoliated graphene oxide solution for obtaining the film on a third surface, wherein the film has a second thickness in a range of 0.5 um to 20 um, and wherein the film comprises at least one layer of the graphene oxide.
11. A method according to claim 10, wherein the step of filtering the exfoliated graphene oxide solution is performed using at least one second filter membrane, the third surface being a surface of the at least one second filter membrane, wherein a second volume of the exfoliated graphene oxide solution is passed through the at least one second filter membrane resulting in deposition of the film on the surface of the at least one second filter membrane.
12. A method according to claim 10 or 11, further comprising synthesizing the graphite oxide paste from natural graphite. 13. A method according to claim 10, 11, or 12, further comprising transferring the film obtained on the third surface to a fourth surface of a substrate for obtaining a graphene oxide encapsulated substrate. 14. A method according to claim 13, further comprising reducing the film deposited on the graphene oxide encapsulated substrate by one of:
immersing the graphene oxide encapsulated substrate in an acidic aqueous solution having a specific concentration at a first temperature for a third time duration;
exposing the graphene oxide encapsulated substrate to acidic vapour at a second temperature for a fourth time duration.