Bulk structure of nonionic and mixed nonionic-ionic surfactant micelles determined by SANS
The aim of this work is to improve the understanding of structural forces in mixtures of nonionic-ionic surfactant micelles (nonionic: Tween 20, ionic: SDS). Therefore, the structural forces of these systems are already successfully measured by AFM, indicating that the micellar shape remains spherical after adding up to 30% of ionic species to nonionic dispersions. This doping of uncharged surfactant micelles can be used for a very precise control of the structural forces in those systems. By using SANS we want to determine the bulk structure (i.e. the micellar shape (extracted from P(Q)) and average inter-micellar distance (extracted from S(Q))) of these dispersions to complement this work. In works by other groups it is shown that the average interparticle spacing in bulk matches the wavelength of the structural forces so that the bulk nanostructure determines the structural forces itself. Even though this outcome marked a huge success in the description of the structural forces a quantitative theoretical model to describe the experimental data is still missing. This work is part of the PhD project of M. Ludwig which is supposed to finish spring 2020.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
LUDWIG Michael and SCHWEINS Ralf. (2019). Bulk structure of nonionic and mixed nonionic-ionic surfactant micelles determined by SANS. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.EASY-440
This data is not yet public
This data is not yet public
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