On the Multi-Layered Adsorption of Alcanols in the Vicinity of Liquid–Vapor Transition at the Saturated Hydrocarbon–Water Interface
- Авторлар: Tikhonov A.1, Volkov Y.2
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Мекемелер:
- P.L. Kapitza Institute for Physical Problems, RAS
- Kurchatov Institute
- Шығарылым: № 5 (2024)
- Беттер: 3-7
- Бөлім: Articles
- URL: https://journals.rcsi.science/1028-0960/article/view/264370
- DOI: https://doi.org/10.31857/S1028096024050017
- EDN: https://elibrary.ru/FURCYY
- ID: 264370
Дәйексөз келтіру
Аннотация
Structure of adsorption layer of long-chain monoatomic alcohols: 1-dodecanol and 1-tetracosanol at the interfaces n-hexane – water and n-hexadecane – water in the vicinity of “liquid – vapor” thermotropic phase transition is investigated by the method of X-ray reflectometry at synchrotron source. Model-independent structural data obtained on the adsorption layers under investigation deviate considerably from the structural parameters which have been proposed previously within a model-based representation and discussed in previous publications on said systems. It is shown that in the low-temperature mesophase the adsorption film consists of a Gibbs monolayer, a transitional liquid region with thickness of two to three monolayers ~50 Å and an extended (wide up to 200 Å) layer of micelles. Presence of a plane of the closest approach of micellar layer to the adsorption film at the interface is established. Transition to the high-temperature mesophase is followed by liquefying and partial evaporation of alcanol film along with observed depletion of micellar layer down to its complete disappearance.
Негізгі сөздер
Авторлар туралы
A. Tikhonov
P.L. Kapitza Institute for Physical Problems, RAS
Хат алмасуға жауапты Автор.
Email: tikhonov@kapitza.ras.ru
Ресей, Moscow
Yu. Volkov
Kurchatov Institute
Email: volkov.y@crys.ras.ru
Ресей, Moscow
Әдебиет тізімі
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