Department of Physics, Kazan National Research Technological University, Kazan, Russia.
Institute of Physics, Kazan Federal University, Kazan, Russia.
Magn Reson Chem. 2021 Nov;59(11):1126-1133. doi: 10.1002/mrc.5165. Epub 2021 May 6.
Self-diffusion coefficients of sodium dodecyl sulfate (SDS) were measured in aqueous solutions in the premicellar range of the SDS concentrations 7-34.7 mM and temperatures 30-90°C. Average effective hydrodynamic radii and aggregation numbers of SDS in the premicellar region were determined. At C < CMC at all temperatures, the SDS solution is the solution of monomers. At C > CMC, the increase of temperature leads to decrease in the effective hydrodynamic radii and the average aggregation numbers. At C > > CMC, it is impossible to reach the monomeric state by increasing the temperature.
在浓度为 7-34.7mM 的 SDS 水溶液的胶束前区，测量了温度为 30-90°C 时 SDS 的自扩散系数。测定了胶束前区 SDS 的平均有效流体力学半径和聚集数。在所有温度下 C < CMC 时，SDS 溶液是单体溶液。在 C > CMC 时，温度的升高导致有效流体力学半径和平均聚集数的减小。在 C > > CMC 时，通过升高温度不可能达到单体状态。
