caa a22 4500 605489815 CHVBK 20210128100501.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1134/S1061933X15040146 doi (NATIONALLICENCE)springer-10.1134/S1061933X15040146 Diffusion coefficients of ionic surfactants with different molecular structures in aqueous solutions [Elektronische Daten] [T. Movchan, A. Rusanov, I. Soboleva, N. Khlebunova, E. Plotnikova, A. Shchekin] Aqueous micellar solutions of dodecyl- and hexadecyltrimethylammonium bromides, hexade- cylpyridinium bromide and chloride, domiphen bromide ((dodecyldimethyl-N-2-phenoxyethyl)ammonium bromide), hexadecyltriphenylphosphonium bromide, and sodium dodecyl sulfate have been investigated using dynamic light scattering. A local increase in the diffusion coefficient has been discovered for all ionic surfactants at concentrations higher than the first critical micelle concentration (CMC1). It has been shown that, at the same alkyl chain length and counterion nature, the increase in the diffusion coefficient with surfactant content becomes more pronounced with a reduction in CMC1. The concentration dependences of the diffusion coefficients have been explained in terms of a previously proposed theory formulated for ideal micellar systems. The existence of the local minimum in the diffusion coefficient near CMC1 has been shown to be a general regularity for binary surface-active electrolytes. Pleiades Publishing, Ltd., 2015 Movchan T. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Rusanov A. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Soboleva I. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Khlebunova N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Plotnikova E. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Shchekin A. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut Colloid Journal Pleiades Publishing 77/4(2015-07-01), 492-499 1061-933X 77:4<492 2015 77 10595 https://doi.org/10.1134/S1061933X15040146 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061933X15040146 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Movchan T. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Rusanov A. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Soboleva I. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Khlebunova N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Plotnikova E. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Shchekin A. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, 119071, Moscow, Russia aut NATIONALLICENCE 773 0- Colloid Journal Pleiades Publishing 77/4(2015-07-01), 492-499 1061-933X 77:4<492 2015 77 10595