Regenerated cellulose films were successfully prepared from cornhusks in two ionic liquids AmimCl and EmimAc. FTIR analysis showed that AmimCl and EmimAc were direct solvents for cellulose. The X-ray diffraction patterns indicated that RCC film
has a typical cellulose II crystalline form, and the degree of crystallinity was obviously lower than that of the original cellulose I. The SEM images of the RCC films displayed a homogeneous structure from the interior to the surface, indicating a dense architecture. The RCC films prepared from cornhusks displayed good mechanical properties: the tensile strength of RCC films regenerated from AmimCl
with a DP of 410 could reach as high as 112 MPa, a value, which is even higher than that of the regenerated cellulose films obtained from dissolving WP under similar conditions, thus confirming the suitability of cornhusks for high quality use. Based on the fact that the ILs could be effectively recycled after regeneration, this study provides a technically feasible and environmentally acceptable method to prepare regenerated cellulose films using relatively cheap cornhusk as cellulose resources.