Modified cellulose films with controlled permeatability and biodegradability by crosslinking with toluene diisocyanate under homogeneous conditions

► Cellulose films were prepared by crosslinking with toluene diisocyanate in DMAc/LiCl solvent system. ► The permeation rates of these films were controllable by adjusting crosslinking density. ► Cellulose films were controllable biodegradable by adjusting crosslinking density. ► Biodegradability was determined by the method of ISO 14852-1999 and burying in natural cultivated soil.