Regenerated Cellulose Fibers Prepared from Wheat Straw with Different Solvents

Wheat straw cellulose (WSC) was simply isolated by delignification and hemicellulose‐removal processes, and then dissolved in five non‐derivatizing solvents, including N, N‐dimethylacetamide /lithium chloride, N‐methylmorpholine‐N‐oxide, 1‐butyl‐3‐methylimidazolium chloride, 1‐allyl‐3‐methylimidazolium chloride and 1‐ethyl‐3‐methylimidazolium acetate, to prepare regenerated cellulose fibers with wet spinning method. The results showed that WSC could be completely dissolved in all of the five solvents, and the chemical structure and thermal stability of the regenerated fibers were similar. However, the viscosity of the solutions, the morphology and mechanical strength of the fibers were highly depended on the type of the solvents. Biodegradability‐regenerated cellulose fibers are manufactured from renewable wheat straw resources through environmentally friendly processes with [Amim]Cl, [Bmim]Cl, [Emim]Ac, DMAc/ LiCl, and NMMO as solvents. The obtained fibers have good thermal stability, and the morphology and mechanical strength of the fibers are highly depended on the type of solvents. This study proposes an alternative resource for the manufacture of regenerated fibers.