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Citation: GAO Cai, ZHOU Guo-yan. Phenomenological Study of Structure Relaxation of Glycerol Aqueous Glass[J]. Acta Physico-Chimica Sinica, ;2005, 21(08): 909-914. doi: 10.3866/PKU.WHXB20050817 shu

Phenomenological Study of Structure Relaxation of Glycerol Aqueous Glass

GAO Cai ,
ZHOU Guo-yan

1.
Department of Energy & Environment Engineering, Zhongyuan Institute of Technology, Zhengzhou 450007;

Received Date: 27 December 2004
Available Online: 15 August 2005

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.
- Structure relaxation; Glycerol; Aqueous solutions; Differential scanning calorimetry (DSC)
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