Highly porous aerogels
US-2016137503-A1 · May 19, 2016 · US
Polysaccharide aerogel
US11103845B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11103845-B2 |
| Application number | US-201716463232-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 7, 2017 |
| Priority date | Dec 9, 2016 |
| Publication date | Aug 31, 2021 |
| Grant date | Aug 31, 2021 |
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- Title
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Abstract
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Disclosed herein is a polysaccharide aerogel comprising cotton cellulose fibres and a method of preparing the polysaccharide aerogel. The method comprises: mixing cotton cellulose fibres and a cross-linker to form a mixture; sonicating the mixture; freezing the sonicated mixture; and freeze drying the frozen mixture to form an aerogel. A further embodiment provides a polysaccharide aerogel comprising cotton cellulose fibres and paper cellulose fibres in a weight ratio of 1:1 to 1:6 and a method of preparation thereof wherein in the mixing step, the paper cellulose fibres are added to the cotton cellulose fibres to form a mixture.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polysaccharide aerogel, comprising cotton cellulose fibres and paper cellulose fibres, wherein the cotton cellulose fibres and the paper cellulose fibres are comprised in the aerogel in a weight ratio of 1:1 to 1:6. 2. The aerogel of claim 1 , wherein the aerogel is compressible. 3. The aerogel of claim 1 , wherein the aerogel is formed from a hydrogel comprising 0.5-1.5 weight % cotton cellulose fibres. 4. The aerogel of claim 1 , wherein the aerogel further comprises at least one additive. 5. The aerogel of claim 4 , wherein the at least one additive comprises chitosan. 6. The aerogel of claim 1 , wherein the aerogel comprises at least one cross-linker. 7. The aerogel of claim 6 , wherein the at least one cross-linker comprises a wet-strength resin. 8. A device, comprising the aerogel of claim 1 . 9. A method of forming the aerogel of claim 1 , the method comprising: mixing cotton cellulose fibres and paper cellulose fibres in a weight ratio of 1:1 to 1:6 and a cross-linker to form a mixture; sonicating the mixture; freezing the sonicated mixture; and freeze drying the frozen mixture to form the aerogel. 10. The method of claim 9 , wherein the mixing further comprises mixing at least one additive. 11. The method of claim 10 , wherein the at least one additive is chitosan. 12. The method of claim 9 , wherein the method further comprises compressing the aerogel following the freeze drying.
Assignees
Inventors
Classifications
Separation of non-miscible liquids · CPC title
Surgical adhesives or cements; Adhesives for colostomy devices · CPC title
Crosslinking of cellulose derivatives · CPC title
- B01D17/0202Primary
by ab- or adsorption · CPC title
- B01J13/0091Primary
Preparation of aerogels, e.g. xerogels · CPC title
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- What does patent US11103845B2 cover?
- Disclosed herein is a polysaccharide aerogel comprising cotton cellulose fibres and a method of preparing the polysaccharide aerogel. The method comprises: mixing cotton cellulose fibres and a cross-linker to form a mixture; sonicating the mixture; freezing the sonicated mixture; and freeze drying the frozen mixture to form an aerogel. A further embodiment provides a polysaccharide aerogel comp…
- Who is the assignee on this patent?
- Nat Univ Singapore
- What technology area does this patent fall under?
- Primary CPC classification B01D17/0202. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 31 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).