Author:
Arkhipov Victor P.,Arkhipov Ruslan V.,Kuzina Natalia,Petrova Ekaterina V.,Filippov Andrei
Abstract
AbstractThe dynamic and aggregation properties of Triton X-100 in a mixture of ordinary and heavy water in a wide temperature range from room temperature to the cloud point and above were studied. The ratio of ordinary and heavy water was calculated in such a way as to ensure equal densities of Triton X-100 and the water mixture. This made it possible to exclude the effects of sedimentation and study the evolution of Triton X-100 micelles and aggregates, without complication by the effects of spatial phase separation above the cloud point. Self-diffusion coefficients of Triton X-100 molecules were measured by NMR, and the effective hydrodynamic radii of micelles and aggregates were calculated using the Stokes–Einstein relation. The anomalous temperature behavior of the diffusion coefficient of Triton X-100 molecules is explained by changes in the sizes of diffusing objects during their evolution from micelles to dehydrated aggregates below the cloud point and by changes in the sizes of aggregates above the cloud point. The results of the NMR studies are confirmed by data obtained by dynamic light scattering.
Funder
Ministry of Science and Higher Education of Russian Federation
Ministry of Science and Higher Education of the Russian Federation
Kazan Federal University
Lulea University of Technology
Publisher
Springer Science and Business Media LLC
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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