Functionalized porous membranes and methods of manufacture and use
AssigneeCelgard, LLC
InventorsKristoffer K. Stokes, Karl F. Humiston
Life of this patent
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Abstract
A functionalized microporous, mesoporous, or nanoporous membrane, material, textile, composite, laminate, or the like, and/or a method of making or using such functionalized membranes. The functionalized porous membrane may be a functionalized microporous, mesoporous, or nanoporous membrane that has a functional molecule attached, such as a functional polymer, to the surface and/or internal fibrillar structure of the membrane.
Claims19
A textile, film, composite, laminate, fiber, hollow fiber, filtration material, separations material, or a combination thereof, comprising a functionalized membrane that comprises:
- a microporous, mesoporous, or nanoporous membrane having a surface and an internal fibrillar structure, and
- a functional molecule attached by a vapor deposition process to:
- the internal fibrillar structure of the membrane, and optionally to the surface of the membrane.
A medical diagnostic membrane comprising a functionalized porous membrane that comprises:
- a microporous, mesoporous, or nanoporous membrane having a surface and an internal fibrillar structure, and
- a functional molecule attached by a plasma vapor deposition process to:
- the internal fibrillar structure of the membrane, and optionally, to the surface of the membrane, and the functional molecule is a fluorinated polymer,
- wherein the functionalized membrane has, when compared to the same membrane that does not have the plasma vapor deposited functional molecule, an equivalent or better air permeability as measured by JIS Gurley, and an increased oil repellency as measured by AATCC TM 118.
A method of making a functionalized porous membrane comprising:
- functionalizing a microporous, mesoporous, or nanoporous membrane with a functional molecule, wherein
- the functionalized porous membrane comprises a microporous, mesoporous, or nanoporous membrane having a surface and an internal fibrillar structure, and
- a functional molecule attached by a plasma vapor deposition process to:
- the internal fibrillar structure of the membrane, and optionally, to the surface of the membrane.
Dependencies are inferred from the claim text.