Diffusion of Alkyltriphenylphosphonium Bromides in Aqueous Micellar Solutions

T. G. Movchan, A. I. Rusanov, E. V. Plotnikova, I. V. Soboleva

Результат исследований: Научные публикации в периодических изданияхстатья

2 Цитирования (Scopus)

Аннотация

Dynamic light scattering, conductometry, and capillary viscometry have been used to study aqueous micellar solutions of dodecyl-, tetradecyl-, and hexadecyltriphenylphosphonium bromides in a wide range of concentrations covering the first and second critical micelle concentrations (CMC1 and CMC2). It has been shown that the concentration curves for the diffusion coefficients of the ionic surfactants increase above CMC1 and, then, pass through a maximum. As the alkyl chain length increases, the slopes of the concentration curves within the range of the linear growth in the diffusion coefficient rise, the height of the maximum increases, and its position shifts toward lower concentrations. The obtained results have been explained in terms of a theory previously developed for ideal micellar systems. It has been shown that the mobility factor plays the predominant role in the range of the linear increase in the diffusion coefficient and the effect of the viscosity of a micellar surfactant solution is enhanced with a rise in its concentration.

Язык оригиналаанглийский
Страницы (с-по)290-297
Число страниц8
ЖурналColloid Journal
Том80
Номер выпуска3
DOI
СостояниеОпубликовано - июн 2018

Предметные области Scopus

  • Поверхности и интерфейсы
  • Физическая и теоретическая химия
  • Коллоидная химия и химия поверхности

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