Superabsorbent materials and uses thereof
OwnerDan W. Urryinventor
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Abstract
Polymeric materials having an inverse temperature transition, particularly bioelastic polymers comprising monomeric units selected from the group consisting of bioelastic pentapeptides, tetrapeptides, and nonapeptides, have been found to have controllable absorbent properties that can be varied with temperature or contact with liquids. The materials are selected to be in a contracted or swollen state initially, depending on the specific use. When the material is located under different conditions (such as a different temperature resulting from being either in contact with or at distance from human skin), the material undergoes swelling or contraction to switch to the other state.
Claims15
In a method for absorbing an aqueous liquid with an absorbent, an improvement which comprises:
- contacting said aqueous liquid with said absorbent, said absorbent comprising a dry bioelastic polymer comprising elastomeric units selected from the group consisting of bioelastic pentapeptides, tetrapeptides, and nonapeptides, and
- absorbing said liquid with said dry bioelastic polymer, thereby producing a wet bioelastic polymer.
In a method for absorbing an aqueous liquid with an absorbent, an improvement which comprises:
- contacting said aqueous liquid with said absorbent comprising a polymeric material that undergoes an inverse temperature transition, and
- absorbing said liquid with said polymeric material, thereby producing a wet polymeric material.
Dependencies are inferred from the claim text.