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US 10,919,986 B2Granted
Porous polymeric cellulose prepared via cellulose crosslinking
AssigneeNanopareil, LLC
InventorsSteven Schneiderman, Todd J. Menkhaus, Yong Zhao, Hao Fong, Craig Arnold
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Abstract
The invention relates to porous polymeric cellulose prepared via cellulose crosslinking. The porous polymeric cellulose can be incorporated into membranes and/or hydrogels. In preferred embodiments, the membranes and/or hydrogels can provide high dynamic binding capacity at high flow rates. Membranes and/or hydrogels comprising the porous polymeric cellulose are particularly suitable for filtration, separation, and/or functionalization media.
Claims28
A hybrid cellulose membrane composition comprising:
- a first electrospun nanofiber, wherein the first electrospun nanofiber comprises cellulose;
- and
- a second electrospun nanofiber, wherein the second electrospun nanofiber comprises a non-cellulose based polymer;
- wherein the composition comprises pores and/or channels;
- wherein the cellulose is crosslinked by a crosslinking agent;
- wherein the crosslinking agent is an aldehyde, an organochloride, an ether, a multi-functional carboxylic acid, glycerol, a urea derivative, a glycidyl ether, or a mixture thereof;
- and wherein the composition comprises at least 30 wt. % of the cellulose.
4 more elements
A method of preparing a composition comprising:
- (a) adding a hybrid membrane composition comprising a first electrospun nanofiber and a second electrospun nanofiber to a crosslinking system;
- wherein the first electrospun nanofiber comprises cellulose;
- wherein the second electrospun nanofiber comprises a non-cellulose-based polymer;
- wherein the composition comprises at least 30 wt. % of the cellulose;
- wherein the crosslinking system comprises a crosslinking agent and a catalyst;
- wherein the crosslinking agent is an aldehyde, an organochloride, an ether, a multi-functional carboxylic acid, a urea derivative, a glycidyl ether, or a mixture thereof;
- wherein the cellulose is crosslinked by the crosslinking agent;
- and
- (b) curing the composition thereafter;
- wherein the composition comprises pores and/or channels.
7 more elements
Dependencies are inferred from the claim text.