Oxidized poly alpha-1,3-glucan
View Patent ↗Compositions comprising oxidized poly alpha-1,3-glucan compounds are disclosed herein. Oxidized poly alpha-1,3-glucan compounds are produced by contacting poly alpha-1,3-glucan under aqueous conditions with at least one N-oxoammonium salt.
1. A material comprising fiber, wherein an oxidized poly alpha-1,3-glucan compound is adsorbed to the material, and wherein the compound is produced by contacting poly alpha-1,3-glucan having at least 90% alpha-1,3 glycosidic linkages under aqueous conditions with at least one agent that is capable of oxidizing the poly alpha-1,3-glucan.
2. The material of claim 1 , wherein the poly alpha-1,3-glucan has at least 95% alpha-1,3 glycosidic linkages.
3. The material of claim 1 , wherein the poly alpha-1,3-glucan has a weight-average molecular weight of at least 1000.
4. The material of claim 1 , wherein the poly alpha-1,3-glucan has a weight-average molecular weight of at least 5000.
5. The material of claim 1 , wherein the compound is crosslinked.
6. The material of claim 1 , wherein the fiber is a natural fiber.
7. The material of claim 6 , wherein the natural fiber comprises cellulosic fiber.
8. The material of claim 7 , wherein the cellulosic fiber is cotton.
9. The material of claim 1 , wherein the fiber is a synthetic fiber.
10. The material of claim 9 , wherein the synthetic fiber comprises polyester.
11. The material of claim 1 , wherein the fiber is a semi-synthetic fiber, optionally wherein the semi-synthetic fiber comprises rayon.
12. The material of claim 1 , wherein the material comprises a combination of natural fiber and synthetic fiber.
13. The material of claim 12 , wherein the material comprises cellulosic fiber and polyester.
14. The material of claim 1 , wherein the material is fabric.
15. The material of claim 1 , wherein the material is non-woven fabric, padding, or foam.
16. The material of claim 1 , wherein the material is paper.
17. The material of claim 1 , wherein said agent comprises an N-oxoammonium salt.
18. The material of claim 17 , wherein the N-oxoammonium salt comprises a TEMPO oxoammonium salt, optionally wherein the N-oxoammonium salt comprises a 4-acetamido-TEMPO oxoammonium salt.
19. The material of claim 1 , wherein said agent comprises a periodate.
20. A method of treating a material comprising fiber, said method comprising:
contacting the material with an aqueous composition comprising an oxidized poly alpha-1,3-glucan compound, whereby the compound adsorbs to the material, wherein said compound is produced by contacting poly alpha-1,3-glucan having at least 90% alpha-1,3 glycosidic linkages under aqueous conditions with at least one agent that is capable of oxidizing the poly alpha-1,3-glucan.
21. The material of claim 1 , wherein the poly alpha-1,3-glucan has at least 99% alpha-1,3 glycosidic linkages.
22. A material comprising fiber and an oxidized poly alpha-1,3-glucan compound, wherein the compound is produced by contacting poly alpha-1,3-glucan having at least 90% alpha-1,3 glycosidic linkages under aqueous conditions with at least one agent that is capable of oxidizing the poly alpha-1,3-glucan.
23. The material of claim 22 , wherein the poly alpha-1,3-glucan has at least 95% alpha-1,3 glycosidic linkages.
24. The material of claim 22 , wherein the poly alpha-1,3-glucan has at least 99% alpha-1,3 glycosidic linkages.
25. The material of claim 22 , wherein the fiber is a natural fiber.
26. The material of claim 25 , wherein the natural fiber comprises cellulosic fiber.
27. The material of claim 22 , wherein the fiber is a synthetic fiber.
28. The material of claim 27 , wherein the synthetic fiber comprises polyester.
29. The material of claim 22 , wherein the material is fabric.
30. The material of claim 22 , wherein the material is paper.