with high polarity. Since no toxic or explosive gases are
formed due to their low vapor pressure, ionic liquids are
considered as “green solvents.”Moreover, ionic liquids exhibited
outstanding dissolving capability for cellulose [16],which
will broaden the comprehensive utilization for cellulose. It
has been shown that the ability to dissolve cellulose is not
an inherent property of this broad class of compounds [17].
Among the vast number of ILs reported so far, only a minority
dissolve cellulose. In order to compare the dissolubility and
processability of different ionic liquids on cellulose, four ILs
including 1-allyl-3-methylimidazolium chloride (AmimCl),
1-ethyl-3-methylimidazolium chloride (EmimCl), 1-butyl-
3-methylimidazolium chloride (BmimCl), and 1-ethyl-3-
methylimidazolium acetate (EmimAc) were chosen as solvents
to dissolve cellulose and elaborate regenerated cellulose
films. The morphology, chemical structure, and mechanical
properties of cellulose films were investigated to evaluate
the desirability of their applications in the packaging and
functional materials fields.