Preparation of large ultra-thin free-standing polymer films
US-2016311989-A1 · Oct 27, 2016 · US
Ultrathin graphene/polymer laminate films
US11285704B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11285704-B2 |
| Application number | US-201715698473-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 7, 2017 |
| Priority date | Sep 7, 2017 |
| Publication date | Mar 29, 2022 |
| Grant date | Mar 29, 2022 |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 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.
Assignees
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Classifications
Carbon · CPC title
Vapour deposition · CPC title
Aqueous dispersion or solution · CPC title
Polymeric substrate · CPC title
substances to be applied floating on a fluid · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11285704B2 cover?
- 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.
- Who is the assignee on this patent?
- L Livermore Nat Security Llc
- What technology area does this patent fall under?
- Primary CPC classification B32B27/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 29 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).