subsequent over-night drying at 80 C. Plasticized HEC (pHEC) used
hereafter was prepared from a premix containing 30 wt% glycerol
and 10 wt% water. In these conditions, the final glycerol content
was 25 wt%, as verified by TGA measurements which is in accordance
with the premix composition. Actually, after water evaporation,
the blend composition became HEC/glycerol 75/25 (w/w).