Superabsorbent polymer

1. A superabsorbent polymer derived from a polysaccharide material, said polymer having a Free Liquid Value less than about 40 percent and an absorptive capacity of at least about 20 g/g.

2. The polymer of claim 1 , wherein the polymer is a sulfated polymer.

3. The polymer of claim 1 , wherein the polymer is a crosslinked polymer.

4. The polymer of claim 1 , wherein the polymer is a regenerated polymer.

5. A superabsorbent polymer derived from a polysaccharide material, said polymer having a Free Liquid Value less than about 30 percent and an absorptive capacity of at least about 20 g/g.

6. The polymer of claim 5 , wherein the polymer is a sulfated polymer.

7. The polymer of claim 5 , wherein the polymer is a crosslinked polymer.

8. The polymer of claim 5 , wherein the polymer is a regenerated polymer.

9. A regenerated, superabsorbent polymer derived from a polysaccharide material, said polymer having a Free Liquid Value less than about 40 percent and an absorptive capacity of at least about 20 g/g.

10. The polymer of claim 9 having a Free Liquid Value less than about 30 percent.

11. The polymer of claim 9 , wherein the polymer is a sulfated polymer.

12. The polymer of claim 9 , wherein the polymer is a crosslinked polymer.

13. A superabsorbent polymer derived from a polysaccharide material treated with sulfuric acid to render the polysaccharide material superabsorbent, wherein the polymer has an absorptive capacity of at least about 20 g/g.

14. The polymer of claim 13 having a Free Liquid Value less than about 40 percent.

15. The polymer of claim 13 having a Free Liquid Value less than about 30 percent.

16. The polymer of claim 13 , wherein the polymer is a crosslinked polymer.

17. The polymer of claim 13 , wherein the polymer is a regenerated polymer.

18. A regenerated, superabsorbent polymer derived from a polysaccharide material treated with sulfuric acid to render the polysaccharide material superabsorbent, said polymer having a Free Liquid Value less than about 40 percent.

19. The polymer of claim 18 having a Free Liquid Value less than about 30 percent.

20. The polymer of claim 18 having an absorptive capacity of at least about 20 g/g.

21. The polymer of claim 18 , wherein the polymer is a crosslinked polymer.

22. A superabsorbent polymer derived from a sulfated polysaccharide material, said polymer having a Free Liquid Value less than about 40 percent, wherein the polymer is not crosslinked with a crosslinking agent.

23. The polymer of claim 22 having a Free Liquid Value less than about 30 percent.

24. The polymer of claim 22 having an absorptive capacity of at least about 20 g/g.

25. The polymer of claim 22 , wherein the polymer is a regenerated polymer.

26. A method for making a superabsorbent polymer particle, comprising

sulfating a polysaccharide material with a sulfating agent to provide a sulfated polysaccharide material;

dissolving the sulfated polysaccharide material in an aqueous medium; and

precipitating the sulfated polysaccharide material from the aqueous medium to provide a polymer particle.

27. The method of claim 26 , wherein the sulfating agent comprises sulfuric acid.

28. The method of claim 26 , wherein precipitating from the aqueous medium comprises adding a non-aqueous material to the aqueous medium.

29. The method of claim 26 further comprising neutralizing the sulfated cellulosic, lignocellulosic, or polysaccharide material prior to dissolving the material in an aqueous medium.

30. A method for making a superabsorbent polymer particle, comprising

sulfating a polysaccharide material with a sulfating agent to provide a sulfated polysaccharide material;

dissolving the sulfated polysaccharide material in an aqueous medium; and

regenerating the sulfated polysaccharide material from the aqueous medium by drying to provide a polymer particle.

31. The method of claim 30 , wherein the sulfating agent comprises sulfuric acid.

32. The method of claim 30 further comprising neutralizing the sulfated cellulosic, lignocellulosic, or polysaccharide material prior to dissolving the material in an aqueous medium.

33. An absorbent composite comprising the polymer of claim 1 .

34. The absorbent composite of claim 33 further comprising one or more fibrous materials.

35. The absorbent composite of claim 34 , wherein the fibrous material is at least one of cellulosic fibers and synthetic fibers.

36. An absorbent article, comprising the composite of claim 33 .

37. The absorbent article of claim 36 further comprising a liquid acquisition layer.

38. The absorbent article of claims 37 further comprising a liquid distribution layer.

39. The absorbent article of claim 36 comprising a liquid pervious face sheet and a liquid impervious back sheet.

40. The absorbent article of claim 36 , the absorbent article is at least one of an infant diaper, adult incontinence product, and a feminine care product.

41. The polymer of claim 1 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

42. The polymer of claim 5 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

43. The polymer of claim 9 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

44. A The polymer of claim 13 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

45. The polymer of claim 18 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

46. The polymer of claim 22 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

47. The polymer of claim 26 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.

48. The polymer of claim 30 , wherein the polysaccharide material is at least one of a cellulosic material or lignocellulosic material.