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Current issue   Ukr. J. Phys. 2017, Vol. 62, N 6, p.502-507
https://doi.org/10.15407/ujpe62.06.0502    Paper

Bulavin L.A., Alekseev A.N., Zabashta Yu.F., Kovalyov K.M., Lazarenko M.M., Tkachov S.Yu.

Taras Shevchenko National University of Kyiv
(64/13, Volodymyrs’ka Str., Kyiv 01601, Ukraine; e-mail: kovalovkostya@univ.kiev.ua)

Phase Transitions at Dehydration of Glucose

Section: Soft Matter
Original Author's Text: Ukrainian

Abstract: The dielectric constant of the glucose–water system has been studied in the temperature interval from –180 to 120 ºC and the frequency interval from 5 to 50 kHz. On the basis of the data obtained, the physical mechanism of dehydration of glucose has been proposed. The dehydration of glucose is shown to be a sequence of phase transitions: monohydrate–anhydride, fixed water– free water, the appearance of a water film on the surface of the glucose–water system, and the subsequent water evaporation.

Key words: phase transition, dehydration, dielectric permittivity, glucose.