Hybrid felts of electrospun nanofibers
AssigneeNanopareil, LLC
InventorsTodd J. Menkhaus, Hao Fong
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Abstract
The present invention relates generally to compositions for use in biological and chemical separations, as well as other applications. More specifically, the present invention relates to hybrid felts fabricated from electrospun nanofibers with high permeance and high capacity. Such hybrid felts utilize derivatized cellulose, and at least one non-cellulose-based polymer that may be removed from the felt by subjecting it to moderately elevated temperatures and/or solvents capable of dissolving the non-cellulose-based polymer to leave behind a porous nanofiber felt having more uniform pore sizes and other enhanced properties when compared to single component nanofiber felts.
Claims20
An electrospun hybrid nanofiber felt comprising:
- a composite nanofiber and a single component nanofiber, wherein the composite nanofiber comprises a mixture of a derivatized cellulose and a first non-cellulose-based polymer, and wherein the single component nanofiber comprises a second non-cellulose-based polymer, wherein the first and second non-cellulose-based polymers are differentially removable from the nanofiber felt, wherein one or more of the nanofibers are surface functionalized.
An electrospun hybrid nanofiber felt comprising:
- a composite nanofiber and a single component nanofiber;
- wherein the composite nanofiber comprises a mixture of a derivatized cellulose and a first non-cellulose-based polymer, and wherein the composite nanofiber contains less than 49% by mass of the first non-cellulose based polymer;
- and wherein the single component nanofiber comprises a second non-cellulose-based polymer, wherein the first and second non-cellulose-based polymers are differentially removable from the nanofiber felt, wherein one or more of the nanofibers are surface functionalized.
Dependencies are inferred from the claim text.