| abstract |
The invention relates to a hydrogel for nanofibril cellulose. The nanofibril cellulose hydrogel may comprise azidomodified nanofibril cellulose having a substituent of the formula -O- (CH 2) n S (O) m -L 1 -N 3, where n is 1 to 10; m is 0 or 1; and L1 is a linker; wherein the substituent is attached to the carbon of one or more glucosyl units of the azidomodified nanofibril cellulose, thereby forming an ether bond on the carbon. |