2.2. Dissolution and Regeneration of Cellulose
It is a well-known fact that cellulose is insoluble in water and
common organic solvents, presumably because of the formation
of an exceptionally strong inter- and intramolecular hydrogen
bonding network.5,40 Different solvent systems that can dissolve
cellulose have been intensively studied in the past decades with
aim to shape the polysaccharide.15 In general, three different
types can be distinguished (Figure 3):