Hydratable Keratin Compositions
Keratin hydratable absorbents and films are fabricated with simple, repeatable processes. Freeze drying produces a material with instantaneous water absorption to over 20 times its weight in water. Films produced are flexible and uniform with water absorption 7-8 times the original weight.
1 . A composition comprising an absorbent keratin material obtained from a hair filament, wherein the absorbent material is substantially free of water soluble keratin proteins and peptides and wherein the filament is produced by saturating the filament with aqueous solvent to obtain an expanded filament and subsequently removing the water by sublimation to obtain an absorbent material.
2 . The composition of claim 1 , wherein the absorbent material absorbs at least 20 times its weight of water.
3 . The composition of claim 1 , wherein sublimation is accomplished by freeze-drying the absorbent keratin material.
4 . The composition of claim 1 , wherein the hair filament is a human hair filament.
5 . The composition of claim 1 , wherein the hair filament is an animal hair or wool filament.
6 . A composition made by the process comprising:
oxidizing hair or wool effective to disrupt a major portion of the cystine disulfide bonds in the hair or wool;
removing substantially all the proteins and peptides that are water soluable at neutral pH from the composition;
swelling the composition by saturation with aqueous solution; and
freeze-drying the composition.