Layered and scrolled nanocomposites with aligned semi-infinite graphene inclusions at the platelet limit
AssigneeMassachusetts Institute of Technology
InventorsPingwei Liu, Michael S. Strano
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Abstract
A composite can include alternating layers of a first layer including a 2D material and a second layer including a polymer matrix. Fabrication methods can take a thin layer of molecular thickness and construct large composite stacks that scale exponentially with the number of processing steps. An analogous shear scrolling method can create Archimedean scroll fibers from single layers with similar scaling. These methods can produce materials that demonstrate the α→∞ limit while combining electrical and optical properties minimal volume fraction of the filler.
Claims26
A composite comprising:
- alternating layers of a first layer comprising a 2D material and a second layer including a polymer matrix,
- wherein the 2D material comprises aligned nanoplatelets that create a sheet structure of a near infinite aspect ratio,
- wherein the 2D material is present at a volume fraction (VG) of between about 0.003% and about 0.185%,
- wherein the composite comprises at least i stacked alternating layers of the first layer and the second layer;
- wherein i is between about 1 and 1000;
- and
- wherein the aligned nanoplatelets for each first layer in the alternating layers of the composite are aligned along an axis.
A composite fiber comprising:
- alternating layers of a first layer comprising a 2D material and a second layer including a polymer matrix,
- wherein the 2D material comprises aligned nanoplatelets that create a sheet structure of a near infinite aspect ratio,
- wherein the 2D material is present at a volume fraction (VG) of between about 0.003% and about 0.185%, and
- wherein the composite is rolled into a scroll fiber such that a single first layer and second layer form multiple alternating layers in a cross section of the composite fiber.
Dependencies are inferred from the claim text.