Ionic Liquids for the Dissolution and Regeneration of Cellulose.
نویسندگان
چکیده
Cellulose derivatives (Figure 1) have many important commercial applications in the fiber, paper, membrane, polymer and paints industries. However, there are only a limited number of common solvents in which cellulose is soluble; solvents include, carbon disulfide, N,Ndimethylacetamide/lithium chloride (DMAC/LiCl), concentrated inorganic salt (ZnCl/H2O, Ca(SCN)2/H2O) and mineral acids (H2SO4/H3PO4), or molten salt hydrates (LiClO4.3H2O, NaSCN/KSCN/LiSCN/H2O). The efficiency of existing methods for dissolving and derivitizing cellulose can be significantly improved by the availability of suitable solvents for refined and natural cellulose; such an example is N-methylmorpholine-Noxide (NMMO), used as a solvent for non-derivitizing dissolution of cellulose for the production of lyocell fibers.
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