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The finding of new cellulose solvent is one of the key issues for the application of cellulose in various fields.For the purpose to replace the environmental polluted viscose process, several direct cellulose solvents have been found in the last decades, including DMAc/LiCl, N-methylmorpholine-N-oxide monohydrate (NMMO·H2O, ionic liquids (ILs), low temperature alkali/urea aqueous solutions.