The state of adsorbed layers of poly(ethylene glycol) fluorohexyl ether at the water-perfluorodecaline interface and its premicellar association in aqueous solutionsстатья
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Дата последнего поиска статьи во внешних источниках: 12 октября 2013 г.
Местоположение издательства:Road Town, United Kingdom
Первая страница:41
Последняя страница:47
Аннотация:Interfacial tensions of aqueous solutions of fluorinated nonionic surfactant [poly(ethylene glycol) fluorohexyl ether] were precisely measured under adsorption equilibrium at 293 K within a wide concentration range. Premicellar association of the surfactant was revealed in the concentration range below CMC, the pre-associates formed being trimers. Increments of the free energy required to transfer the fluoromethylene group from an aqueous solution to the interface with fluorodecalin, into the submicelle (trimer) of a nonionic surfactant as well as into the fluorocarbon core of a micelle were estimated. Two-dimensional condensation in adsorbed layers of surfactant at the water-perfluorodecalin interface was disclosed.