Ultrathin graphene/polymer laminate films
According to one embodiment, a product includes a composite film comprising a polymer layer directly adjacent a graphene layer. According to another embodiment, a process includes layering a graphene layer onto a polymer layer to form a composite film.
1. A product comprising:
a composite film comprising a polymer layer directly adjacent a graphene layer,
wherein the graphene layer includes islands of graphene that are held together by van der Waals forces,
wherein a weight fraction of graphene in the composite film is greater than 10% relative to the total weight of the polymer layer and the graphene layer.
2. The product of claim 1 , wherein the polymer layer has a thickness of less than about 100 nm.
3. The product of claim 1 , wherein the graphene layer includes several layers of graphene.
4. The product of claim 1 , wherein the composite film includes a second graphene layer directly adjacent a second side of the polymer layer.
5. The product of claim 1 , wherein the composite film includes a second graphene layer directly adjacent the graphene layer.
6. The product of claim 1 , wherein the composite film includes a second polymer layer directly adjacent a second side of the graphene layer.
7. The product of claim 1 , wherein the composite film has a stiffness that is at least five times a stiffness of the polymer layer.
8. A method, comprising using the product of claim 1 as a separation medium for separating a component from a liquid.
9. A process of forming the product of claim 1 , the process comprising:
layering the graphene layer onto the polymer layer to form the composite film.
10. The process of claim 9 , wherein the layering is performed in a solution.
11. The product of claim 1 , wherein the weight fraction of graphene in the composite film is greater than 10%.
12. The product of claim 1 , wherein the composite film has a stiffness that is at least five times a stiffness of the polymer layer, wherein the composite film has a yield strength that is greater than three times a yield strength of the polymer layer.
13. The product of claim 1 , wherein the composite film has a yield strength that is greater than two times a yield strength of the polymer layer.
14. A product comprising:
a composite film comprising a polymer layer directly adjacent a graphene layer,
wherein the graphene layer includes islands of graphene that are held together by van der Waals forces,
wherein the composite film has a stiffness greater than three times a stiffness of the polymer layer,
wherein a weight fraction of graphene is greater than 10% relative to the total weight of the polymer layer and graphene layer.
15. The product of claim 14 , wherein the composite film includes a second graphene layer directly adjacent a second side of the polymer layer.
16. The product of claim 14 , wherein the composite film has a stiffness that is at least five times a stiffness of the polymer layer.
17. The product of claim 14 , wherein the polymer layer has a thickness of less than about 100 nm.
18. A product comprising:
a composite film comprising a polymer layer directly adjacent a graphene layer,
wherein the composite film has a yield strength that is at least three times a yield strength of the polymer layer,
wherein a weight fraction of graphene is greater than 10% relative to the total weight of the polymer layer and the graphene layer.
19. The product of claim 18 , wherein the composite film has a stiffness that is at least five times a stiffness of the polymer layer.
20. The product of claim 18 , wherein the polymer layer has a thickness of less than about 100 nm.