Medical hydrogel
AssigneeUpm-Kymmene Corporation
InventorsKari Luukko, Markus Nuopponen
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Abstract
The present application relates to a medical hydrogel comprising nanofibrillar cellulose, wherein the hydrogel has a viscosity in the range of 2500-9000 Pa·s and a water retention value in the range of 30-100 g/g. The present application also relates to a method for preparing the medical hydrogel The present application relates to the medical hydrogel for use for treating wounds.
Claims16
A medical hydrogel comprising nanofibrillar cellulose, wherein the hydrogel has a solids content in the range of 4-8% (w/w) and a viscosity in the range of 2500-9000 Pa·s measured at a solids content of 4-8% (w/w), at 37° C. and a shear rate of 0.1 s−1, and a water retention value in the range of 30-100 g/g, wherein the nanofibrillar cellulose is anionically modified via 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) oxidation.
A method for preparing a medical hydrogel, the method comprising
- providing wood pulp,
- anionically modifying the pulp, via 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) oxidation,
- disintegrating the pulp until nanofibrillar cellulose is obtained,
- forming the nanofibrillar cellulose into a hydrogel, wherein the hydrogel has a solids content in the range of 4-8% (w/w) and a viscosity in the range of 2500-9000 Pas measured at a solids content of 4-8% (w/w), at 37° C. and a shear rate of 0.1 s−1, and a water retention value in the range of 30-100 g/g.
Dependencies are inferred from the claim text.