Abstract: In order to examine the effects of water contents on structure relaxation parameters of glycerol aqueous glasses, heat capacity and glass transition temperature of five aqueous solutions (60%, 70%, 80%, 90%, and 100%) were determined using the differential scanning calorimetry (DSC). Structure relaxation behaviors of glycerol aqueous glasses were investigated in the term of Tool-Narayanaswamy-Monihan (TNM) model parameters. The structure relaxation time was found to decrease as the water content increased. Curve-fitting results indicated that the apparent activation energy and non-exponential parameter decreased while non-linear parameter and pre-exponential parameter increased as the water content increased.

Key words: Structure relaxation, Glycerol, Aqueous solutions, Differential scanning calorimetry (DSC)