To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers
An advanced methodology of phase transition determination in aqueous solutions of thermo-sensitive polymers by using of the phase portraits method has been suggested. The methodology allows highly accurate determining the temperature when exactly a half of molecules loses solubility (from the maximu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
al-Farabi Kazakh National University
2020-06-01
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| Series: | Eurasian Chemico-Technological Journal |
| Subjects: | |
| Online Access: | http://ect-journal.kz/index.php/ectj/article/view/960 |
| _version_ | 1818472704155582464 |
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| author | G. A. Mun I. Moldakhan S. B. Kabdushev B. B. Yermukhambetova R. Shaikhutdinov G. Zh. Yeligbayeva |
| author_facet | G. A. Mun I. Moldakhan S. B. Kabdushev B. B. Yermukhambetova R. Shaikhutdinov G. Zh. Yeligbayeva |
| author_sort | G. A. Mun |
| collection | DOAJ |
| description | An advanced methodology of phase transition determination in aqueous solutions of thermo-sensitive polymers by using of the phase portraits method has been suggested. The methodology allows highly accurate determining the temperature when exactly a half of molecules loses solubility (from the maximum number that can go to another phase state under given conditions). It is shown that since phase transition passes usually in a wide enough temperature interval this indicator should be used as a quantitative parameter that characterizes phase transition process. Additionally the suggested methodology allows introducing one more quantitative parameter that reflects a sharpness of phase transition. The methodology is verified by an example of phase transitions study in aqueous solutions of thermo-sensitive copolymers based on N-vinylpyrrolidone and vinyl propyl ether. |
| first_indexed | 2024-04-14T04:12:26Z |
| format | Article |
| id | doaj.art-f05b1ad0138f46a995e6d29718aa3378 |
| institution | Directory Open Access Journal |
| issn | 1562-3920 2522-4867 |
| language | English |
| last_indexed | 2024-04-14T04:12:26Z |
| publishDate | 2020-06-01 |
| publisher | al-Farabi Kazakh National University |
| record_format | Article |
| series | Eurasian Chemico-Technological Journal |
| spelling | doaj.art-f05b1ad0138f46a995e6d29718aa33782022-12-22T02:13:07Zengal-Farabi Kazakh National UniversityEurasian Chemico-Technological Journal1562-39202522-48672020-06-0122210.18321/ectj960To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive PolymersG. A. Mun0I. Moldakhan1S. B. Kabdushev2B. B. Yermukhambetova3R. Shaikhutdinov4G. Zh. Yeligbayeva5Al-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Republic of KazakhstanAlmaty University of Power Engineering and Telecommunications, 126/1 Baitursynova str., Almaty, KazakhstanAlmaty University of Power Engineering and Telecommunications, 126/1 Baitursynova str., Almaty, KazakhstanAl-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Republic of KazakhstanAl-Farabi Kazakh National University, 71 Al-Farabi ave., Almaty, Republic of KazakhstanSatbayev University, 22a Satpaev str., Almaty, KazakhstanAn advanced methodology of phase transition determination in aqueous solutions of thermo-sensitive polymers by using of the phase portraits method has been suggested. The methodology allows highly accurate determining the temperature when exactly a half of molecules loses solubility (from the maximum number that can go to another phase state under given conditions). It is shown that since phase transition passes usually in a wide enough temperature interval this indicator should be used as a quantitative parameter that characterizes phase transition process. Additionally the suggested methodology allows introducing one more quantitative parameter that reflects a sharpness of phase transition. The methodology is verified by an example of phase transitions study in aqueous solutions of thermo-sensitive copolymers based on N-vinylpyrrolidone and vinyl propyl ether.http://ect-journal.kz/index.php/ectj/article/view/960Thermo-sensitive polymersSolution turbidityPhase portraitCopolymerizationLight scattering intensity |
| spellingShingle | G. A. Mun I. Moldakhan S. B. Kabdushev B. B. Yermukhambetova R. Shaikhutdinov G. Zh. Yeligbayeva To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers Eurasian Chemico-Technological Journal Thermo-sensitive polymers Solution turbidity Phase portrait Copolymerization Light scattering intensity |
| title | To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers |
| title_full | To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers |
| title_fullStr | To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers |
| title_full_unstemmed | To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers |
| title_short | To the Methodology of Phase Transition Temperature Determination in Aqueous Solutions of Thermo-Sensitive Polymers |
| title_sort | to the methodology of phase transition temperature determination in aqueous solutions of thermo sensitive polymers |
| topic | Thermo-sensitive polymers Solution turbidity Phase portrait Copolymerization Light scattering intensity |
| url | http://ect-journal.kz/index.php/ectj/article/view/960 |
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