On the Existence of Prewetting in Supracritical Fluid Mixtures
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866917816188272640 |
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| author | Forsman, Jan Woodward, Clifford E. |
| author_facet | Forsman, Jan Woodward, Clifford E. |
| contents | In this communication we demonstrate the existence of a first-order prewetting transition of a supracritical model polymer solution adjacent to an attractive surface. The model fluid we use mimics (qualitatively) an aqueous polyethylene oxide solution and, like the actual solution, displays a closed loop 2-phase region with an upper and lower critical solution temperature. The model fluid is shown to undergo a prewetting transition at an adjacent attractive surface even at temperatures below the lower critical solution temperature (supracriticality). This phenomenon follows from non-local thermodynamics when the lengthscale of the relevant fluid structures of surface films are commensurate or smaller than the range of intermolecular interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_19534 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On the Existence of Prewetting in Supracritical Fluid Mixtures Forsman, Jan Woodward, Clifford E. Soft Condensed Matter Statistical Mechanics In this communication we demonstrate the existence of a first-order prewetting transition of a supracritical model polymer solution adjacent to an attractive surface. The model fluid we use mimics (qualitatively) an aqueous polyethylene oxide solution and, like the actual solution, displays a closed loop 2-phase region with an upper and lower critical solution temperature. The model fluid is shown to undergo a prewetting transition at an adjacent attractive surface even at temperatures below the lower critical solution temperature (supracriticality). This phenomenon follows from non-local thermodynamics when the lengthscale of the relevant fluid structures of surface films are commensurate or smaller than the range of intermolecular interactions. |
| title | On the Existence of Prewetting in Supracritical Fluid Mixtures |
| topic | Soft Condensed Matter Statistical Mechanics |
| url | https://arxiv.org/abs/2410.19534 |