Effects of dissolution of some lignocellulosic materials with ionic liquids as green solvents on mechanical and physical properties of composite films

► The present study realized an environmentally friendly method of cleanly extracting cellulose from woody biomass. ► Cellulose can greatly enhance the flexibility of films especially at low lignin contents. ► The treatment with [DiMIM][MeSO4] had no obvious effect on the solubility of the used materials. ► The solubilization efficiency of woody materials in ILs was found in an order of CEL > CMP ≥ PW. ► CEL film showed superior physical and mechanical properties compared with PW and CMP films.