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US 11,109,619 B2Granted
Filter materials including functionalized cellulose
AssigneeMassachusetts Institute of Technology
InventorsTimothy M. Swager, Jisun Im
Life of this patent
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Abstract
Embodiments described herein provide materials and methods for the absorption or filtration of various species and analytes. In some cases, the materials may be used to remove or reduce the amount of a substance in vapor sample (e.g., cigarette smoke).
Claims4
A filter material, comprising:
- a fiber or network of fibers comprising a cellulose-based polymer comprising at least one binding site, the binding site comprising an aromatic group, wherein the cellulose-based polymer comprises the structure:
- wherein:
- R1 has a structure selected from the group consisting of:
- R2 and R3 can be the same or different and are hydrogen, alkyl, aryl, a carbonyl group, any of which is optionally substituted;
- and
- n is greater than 1.
3 more elements
Dependencies are inferred from the claim text.