Citation: Shao-min Sun, Li Zhao, Yi-hu Song, Qiang Zheng. GLASS TRANSITION OF HYDRATED WHEAT GLIADIN POWDERS[J]. Chinese Journal of Polymer Science, ;2011, 29(4): 483-489. doi: 10.1007/s10118-011-1052-8 shu

GLASS TRANSITION OF HYDRATED WHEAT GLIADIN POWDERS

Received Date: 19 July 2010
Revised Date: 26 September 2010

Modulated-temperature differential scanning calorimetric and dynamic mechanical analyses and dielectric spectroscopy were used to investigate the glass transition of hydrated wheat gliadin powders with moisture absorption ranged from 2.30 db% to 18.21 db%. Glass transition temperature (Tg) of dry wheat gliadin was estimated according to the Gordon-Taylor equation. Structural heterogeneity at high degrees of hydration was revealed in dielectric temperature and frequency spectra. The activation energies (Ea) of the two relaxations were calculated from Arrhenius equation.
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