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Critical and wetting transitional adsorption behaviour in a liquid system against vapour and other walls

Abstract : The adsorption of 2, 5 DMP (2, 5-dimethylpyridine) at the free surface of water (1)-2, 5 DMP (2) liquid mixtures was determined from surface tension and activity measurements. Two divergences were found: the former was observed at Tc for the critical isochore and the 2, 5 DMP-rich γ-phase which, at coexistence, completely wets the surface at Tc, whereas the latter was noticed at Tw for the water-rich β-phase. These results were compared with those found under similar conditions for the same liquid system with silica as the wall; this comparison is quite fruitful because, with silica, the preferentially wetting phase is the β-phase.
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https://hal.univ-brest.fr/hal-01770134
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Submitted on : Wednesday, April 18, 2018 - 4:15:50 PM
Last modification on : Monday, October 11, 2021 - 2:22:08 PM

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J.P. Huruguen, Mohamed Amara, A.M. Méar, H. Hamraoui, R. Olier, et al.. Critical and wetting transitional adsorption behaviour in a liquid system against vapour and other walls. Journal of Physics: Condensed Matter, IOP Publishing, 2001, 13 (21), pp.4939-4956. ⟨10.1088/0953-8984/13/21/320⟩. ⟨hal-01770134⟩

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