Quantitative Analysis of the Dispersion Interaction of Liquids with the Surface of Gamma-Irradiated PTFE
The Hamaker constants are calculated for the PTFE/PTFE, PTFE/tetradecane, and PTFE/water (PTFE is polytetrafluoroethylene) systems using various dielectric models. Selection of the dielectric model significantly affects the absolute values of the Hamaker constants while it has virtually no effect on...
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| Veröffentlicht in: | Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2024-08, Vol.18 (4), p.787-795 |
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| container_title | Surface investigation, x-ray, synchrotron and neutron techniques |
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| creator | Obvintsev, A. Yu Serov, S. A. Khatipov, S. A. Sadovskaya, N. V. |
| description | The Hamaker constants are calculated for the PTFE/PTFE, PTFE/tetradecane, and PTFE/water (PTFE is polytetrafluoroethylene) systems using various dielectric models. Selection of the dielectric model significantly affects the absolute values of the Hamaker constants while it has virtually no effect on their relative changes depending on the density and dielectric increment of PTFE. The total calculated changes in the work of adhesion due to van der Waals interactions, taking into account changes in density and dielectric increment in gamma-irradiated PTFE, do not exceed 11% for all dielectric models used. It is concluded that changes in surface energy upon the irradiation of PTFE cannot be explained solely by an increase in the contribution of the van der Waals interaction due to polar radiolysis products. It is necessary to consider the electrostatic interaction of stabilized charges with the dipoles of a polar liquid. |
| doi_str_mv | 10.1134/S1027451024700459 |
| format | Article |
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Yu ; Serov, S. A. ; Khatipov, S. A. ; Sadovskaya, N. V.</creator><creatorcontrib>Obvintsev, A. Yu ; Serov, S. A. ; Khatipov, S. A. ; Sadovskaya, N. V.</creatorcontrib><description>The Hamaker constants are calculated for the PTFE/PTFE, PTFE/tetradecane, and PTFE/water (PTFE is polytetrafluoroethylene) systems using various dielectric models. Selection of the dielectric model significantly affects the absolute values of the Hamaker constants while it has virtually no effect on their relative changes depending on the density and dielectric increment of PTFE. The total calculated changes in the work of adhesion due to van der Waals interactions, taking into account changes in density and dielectric increment in gamma-irradiated PTFE, do not exceed 11% for all dielectric models used. It is concluded that changes in surface energy upon the irradiation of PTFE cannot be explained solely by an increase in the contribution of the van der Waals interaction due to polar radiolysis products. It is necessary to consider the electrostatic interaction of stabilized charges with the dipoles of a polar liquid.</description><identifier>ISSN: 1027-4510</identifier><identifier>EISSN: 1819-7094</identifier><identifier>DOI: 10.1134/S1027451024700459</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Chemistry and Materials Science ; Density ; Dipoles ; Irradiation ; Materials Science ; Polytetrafluoroethylene ; Surface energy ; Surfaces and Interfaces ; Tetradecane ; Thin Films</subject><ispartof>Surface investigation, x-ray, synchrotron and neutron techniques, 2024-08, Vol.18 (4), p.787-795</ispartof><rights>Pleiades Publishing, Ltd. 2024. 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It is concluded that changes in surface energy upon the irradiation of PTFE cannot be explained solely by an increase in the contribution of the van der Waals interaction due to polar radiolysis products. It is necessary to consider the electrostatic interaction of stabilized charges with the dipoles of a polar liquid.</description><subject>Chemistry and Materials Science</subject><subject>Density</subject><subject>Dipoles</subject><subject>Irradiation</subject><subject>Materials Science</subject><subject>Polytetrafluoroethylene</subject><subject>Surface energy</subject><subject>Surfaces and Interfaces</subject><subject>Tetradecane</subject><subject>Thin Films</subject><issn>1027-4510</issn><issn>1819-7094</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp1kM1KAzEUhYMoWKsP4G7A9Wh-J8my1LYWCiqt6yFNMjalnZkmGaVvb8YKLsTNvRfOdw7cA8AtgvcIEfqwRBBzytKkHELK5BkYIIFkzqGk5-lOct7rl-AqhC2EjBNWDMDmtVN1dFFF92GzUa12x-BC1lRZ3Njs0YXW-uCaOpvX0XqlY38ndeEOnTMh-3Rx840uO18pbXttpvZ7lc-9V8apaE32sppOrsFFpXbB3vzsIXibTlbjp3zxPJuPR4tcIylibjQvmDAaW0S1KIwkcM3l2jJsRYUlh0LItWYESmyoKTA3RUKYFKbQRkpGhuDulNv65tDZEMtt0_n0VygJQpAUXGCRKHSitG9C8LYqW-_2yh9LBMu-0PJPocmDT56Q2Prd-t_k_01fsCB2rg</recordid><startdate>20240801</startdate><enddate>20240801</enddate><creator>Obvintsev, A. 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It is concluded that changes in surface energy upon the irradiation of PTFE cannot be explained solely by an increase in the contribution of the van der Waals interaction due to polar radiolysis products. It is necessary to consider the electrostatic interaction of stabilized charges with the dipoles of a polar liquid.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1027451024700459</doi><tpages>9</tpages></addata></record> |
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| subjects | Chemistry and Materials Science Density Dipoles Irradiation Materials Science Polytetrafluoroethylene Surface energy Surfaces and Interfaces Tetradecane Thin Films |
| title | Quantitative Analysis of the Dispersion Interaction of Liquids with the Surface of Gamma-Irradiated PTFE |
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