High flux and low fouling filtration media
First Claim
Patent Images
1. An article comprising:
- a substrate; and
a coating on said substrate comprising a polymer in combination with at least one nanofiller having a diameter from about 0.3 nm to about 300 nm.
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Abstract
Membranes suitable for microfiltration, ultrafiltration (UF) and nanofiltration (NF) filters are provided. Such membranes may include a nanofibrous scaffold, optionally in combination with a non-woven substrate and/or a coating of a polymer and a functionalized nanofiller. Suitable membranes may also include a coating of a polymer and a functionalized nanofiller on a substrate, which can include a non-woven membrane, a nanofibrous scaffold, or both.
133 Citations
40 Claims
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1. An article comprising:
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a substrate; and a coating on said substrate comprising a polymer in combination with at least one nanofiller having a diameter from about 0.3 nm to about 300 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An article comprising a nanofibrous scaffold comprising:
- fibers having a diameter of from about 1 nm to about 20,000 nm;
voids with an effective diameter of from about 2 nm to about 200 μ
m; and
a thickness of from about 1 μ
m to about 500 μ
m. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
- fibers having a diameter of from about 1 nm to about 20,000 nm;
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39. An article comprising
a substrate; -
a nanofibrous scaffold comprising fibers having a diameter of from about 1 nm to about 20,000 nm applied to a surface of the substrate; and a coating on said nanofibrous scaffold on a surface opposite a surface applied to said substrate comprising a polymer in combination with at least one functionalized nanofiller having a diameter ranging from about 1 nm to about 100 nm.
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40. An article comprising an asymmetric nanofibrous scaffold layer having a bottom surface and a top surface, the fibers making up the bottom surface of the nanofibrous scaffold having a diameter from about 300 nm to about 10,000 nm, and the fibers making up the top surface of the nanofibrous scaffold having a diameter from about 10 nm to about 500 nm, wherein the diameter of the fibers making up the bottom surface of the nanofibrous scaffold is greater than the diameter of the fibers making up the top surface of the nanofibrous scaffold.
Specification