Investigation of morphological features and thermal stability of regenerated wood cellulose from solutions in [BMIm]Cl

A study of the morphological features of regenerated wood pulp LS-0 obtained from its solutions in [BMIm]Cl at concentrations ranging from 2 to 26% has been performed. It was demonstrated that at concentrations of LS-0 up to 8% in [BMIm]Cl, thermograms exhibited a reduction in thermal stability concomitant with an increase in coke residue. In samples of regenerated cellulose obtained from solutions with an LS-0 content of 14% or more, two maxima are observed on the differential thermogravimetric curves (DTG). This phenomenon was explained by the presence of two phases formed during the dissolution-regeneration process. The impact of [BMIm]Cl on the structural characteristics of regenerated cellulose was investigated through IR spectroscopy and X-ray diffraction analysis.