Functional Nanofibers and Methods of Making and Using the Same
AssigneeNano Terra Inc.
InventorsJoseph M. McLellan, Xinhua Li, Graciela Beatriz Blanchet, David Picard
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Abstract
The present invention is directed to functional nanofibers, methods of making the functional nanofibers, and products such as filters and membranes comprising mats of the functional nanofibers.
Claims20
A method for sequestering carbon dioxide, the method comprising:
- contacting a composition comprising carbon dioxide with functional nanofibers having an plurality of amine groups on a surface thereof, wherein the nanofibers have an average cross-sectional dimension of 50 nm to 100 μm;
- and
- reacting at least a portion of the carbon dioxide with the amine groups to sequester at least a portion of the carbon dioxide.
A method of separating an oil from a composition, the method comprising:
- contacting a composition comprising an oil with a filter that includes functional nanofibers having a plurality of hydrophilic functional groups on a surface thereof, wherein the functional nanofibers have an average cross-sectional dimension of 50 nm to 100 μm;
- and
- passing a non-oil portion of the composition through the filter to provide the oil on a surface of the filter.
A water-proof, breathable composition comprising a mat of non-woven polymer nanofibers having an inner surface and an outer surface, wherein at least the outer surface of the mat is hydrophobic, wherein the nanofibers have a mean diameter of about 50 nm to about 1 μm and 90% or more of the nanofibers have a diameter of 1 μm or less, and wherein the mat is permeable to a gas.
Dependencies are inferred from the claim text.