Open AccessIntensification of heat transfer during spinodal decomposition of a superheated aqueous oligomer solution
Author(s) -
Д. В. Волосников,
I. I. Povolotskiy,
A. A. Igolnikov,
M. V. Vasin,
L. D. Son,
П. В. Скрипов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1787/1/012032
Subject(s) - superheating , thermodynamics , spinodal decomposition , aqueous solution , spinodal , isothermal process , thermal conduction , heat transfer , materials science , oligomer , diffusion , chemistry , quenching (fluorescence) , polymer chemistry , phase (matter) , organic chemistry , physics , quantum mechanics , fluorescence
The heat conduction of an aqueous solution of polypropylene glycol in the region of stable and unstable states was studied by the method of pulse isothermal impact on a substance with a characteristic time of 100 ms. It has been shown that the short-term superheating of a homogeneous solution not only above the liquid-liquid equilibrium temperature (low critical solution temperature), but also above the diffusion spinodal is fundamentally possible. The negative character of the deviation of the heat conduction of a solution from the additive law calculated from the heat conduction of the pure components at a given temperature was revealed. The signs of manifestation of spinodal decomposition accompanied by a significant intensification of heat transfer were found.