Brillouin Scattering and DSC Studies of Glass Transition Temperatures of Glucose-Water Mixtures

We studied glass transition temperatures of glucose-water mixtures by using Brillouin scattering and dierential scanning calorimetry (DSC). We tted the polarized components of the Brillouin spectra measured by back scattering geometry to simple Lorentzian form and estimated the glass transition temperature from the slope of the temperature dependent Brillouin peak shift. We also measured glass transition temperatures by using DSC. The results from both experiments were consistent with each other, indicating that the Brillouin-scattering technique can be used to determine the glass transition temperature.