Ultrathin graphene/polymer laminate films

Patent metadata

Field	Value
Publication number	US-2019070832-A1
Application number	US-201715698473-A
Country	US
Kind code	A1
Filing date	Sep 7, 2017
Priority date	Sep 7, 2017
Publication date	Mar 7, 2019
Grant date	—

Abstract

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

What is claimed is:

1 . A product, comprising:
a composite film comprising a polymer layer directly adjacent a 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 a weight fraction of graphene in the composite film is greater than 10%.

4 . The product of claim 1 , wherein the graphene layer includes several layers of graphene.

5 . The product of claim 1 , wherein the composite film includes a second graphene layer directly adjacent a second side of the polymer layer.

6 . The product of claim 1 , wherein the composite film includes a second graphene layer directly adjacent the graphene layer.

7 . The product of claim 1 , wherein the composite film includes a second polymer layer directly adjacent a second side of the graphene layer.

8 . The product of claim 1 , wherein the composite film has a stiffness that is at least twice as stiff as a sum of the stiffnesses of the layers thereof.

9 . The product of claim 1 , wherein the composite film has a stiffness that is at least five times a stiffness of the polymer layer.

10 . The product of claim 1 , wherein the composite film has a yield strength that is at least two times a yield strength of the polymer layer.

11 . A method, comprising using the product of claim 1 as a separation medium.

12 . A process, comprising:
layering a graphene layer onto a polymer layer to form a composite film.

13 . The process of claim 12 , wherein the layering is performed in a solution.

14 . The process of claim 13 , wherein the graphene layer floats on the solution, wherein the polymer layer lifts the graphene layer from the solution during the layering.

15 . The process of claim 13 , wherein the solution has a neutral pH.

16 . The process of claim 12 , comprising layering a second graphene layer onto the composite film.

17 . The process of claim 16 , wherein comprising coupling a third graphene layer onto the composite film.

18 . The process of claim 12 , comprising coupling a second polymer layer to the composite film.

Assignees

• L Livermore Nat Security Llc

Inventors

• Stadermann Michael
• Campbell Patrick
• Miller Philip E
• Aracne-Ruddle Chantel
• Kim Sung Ho
• Espinosa-Loza Francisco J

Classifications

• B32B27/06 Primary

  as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)} · CPC title

• B32B2309/105

  Thickness · CPC title

• C01B32/184

  Preparation · CPC title

• B32B18/00

  Layered products essentially comprising ceramics, e.g. refractory products · CPC title

• B32B37/14

  characterised by the properties of the layers · CPC title