To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method
In this paper, we present new data on non-stationary heating of a platinum wire probe, immersed in a binary partially-miscible liquid. A pressure value and a mass fraction of the a polymer in the mixture were the experimental parameters. The characteristic heating time was from 5 to 15 ms. The objec...
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Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina
2022-08-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/5938 |
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| author | Alexander A. Igolnikov Aleksandr D. Yampol'skiy |
| author_facet | Alexander A. Igolnikov Aleksandr D. Yampol'skiy |
| author_sort | Alexander A. Igolnikov |
| collection | DOAJ |
| description | In this paper, we present new data on non-stationary heating of a platinum wire probe, immersed in a binary partially-miscible liquid. A pressure value and a mass fraction of the a polymer in the mixture were the experimental parameters. The characteristic heating time was from 5 to 15 ms. The object of the research was the water/polypropylene glycol-425 (PPG-425) mixture having lower critical solution temperature (LCST). The position of the diffusion spinodal was estimated based on the obtained data on the liquid-liquid binodal in the framework of the Flory-Huggins approximation. An experimental technique to estimate the position of the spinodal of two-component mixtures with LCST on the scale of the mixture component ratio was developed. It was shown that the method of isobaric pulse heating can be used for this purpose. This representation is based on the threshold change in the heat transfer pattern when crossing the phase coexistence curve and the diffusion spinodal. |
| format | Article |
| id | doaj-art-3fc963bcd6c44266b2a2ab882a0d85a8 |
| institution | Kabale University |
| issn | 2411-1414 |
| language | English |
| publishDate | 2022-08-01 |
| publisher | Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-3fc963bcd6c44266b2a2ab882a0d85a82024-12-25T09:36:55ZengUralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. ElʹcinaChimica Techno Acta2411-14142022-08-019410.15826/chimtech.2022.9.4.084534To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating methodAlexander A. Igolnikov0Aleksandr D. Yampol'skiy1Institute of Thermal Physics UB RAS; Ural Federal UniversityInstitute of Thermal Physics UB RASIn this paper, we present new data on non-stationary heating of a platinum wire probe, immersed in a binary partially-miscible liquid. A pressure value and a mass fraction of the a polymer in the mixture were the experimental parameters. The characteristic heating time was from 5 to 15 ms. The object of the research was the water/polypropylene glycol-425 (PPG-425) mixture having lower critical solution temperature (LCST). The position of the diffusion spinodal was estimated based on the obtained data on the liquid-liquid binodal in the framework of the Flory-Huggins approximation. An experimental technique to estimate the position of the spinodal of two-component mixtures with LCST on the scale of the mixture component ratio was developed. It was shown that the method of isobaric pulse heating can be used for this purpose. This representation is based on the threshold change in the heat transfer pattern when crossing the phase coexistence curve and the diffusion spinodal.https://chimicatechnoacta.ru/article/view/5938diffusion spinodalphase coexistence linepartially-miscible mixturepulse heatingflory-huggins approximation |
| spellingShingle | Alexander A. Igolnikov Aleksandr D. Yampol'skiy To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method Chimica Techno Acta diffusion spinodal phase coexistence line partially-miscible mixture pulse heating flory-huggins approximation |
| title | To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method |
| title_full | To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method |
| title_fullStr | To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method |
| title_full_unstemmed | To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method |
| title_short | To the possibility of experimental estimation of the diffusion spinodal position of binary mixture with LCST via pulsed heating method |
| title_sort | to the possibility of experimental estimation of the diffusion spinodal position of binary mixture with lcst via pulsed heating method |
| topic | diffusion spinodal phase coexistence line partially-miscible mixture pulse heating flory-huggins approximation |
| url | https://chimicatechnoacta.ru/article/view/5938 |
| work_keys_str_mv | AT alexanderaigolnikov tothepossibilityofexperimentalestimationofthediffusionspinodalpositionofbinarymixturewithlcstviapulsedheatingmethod AT aleksandrdyampolskiy tothepossibilityofexperimentalestimationofthediffusionspinodalpositionofbinarymixturewithlcstviapulsedheatingmethod |