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Issue 10, 2020
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Dynamics in polyelectrolyte/microemulsion complexes

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Oil-in-water (O/W) microemulsion droplets are convenient carriers for hydrophobic molecules in an aqueous phase and are used for a wide range of applications. We studied weakly charged O/W microemulsion droplets complexed with oppositely charged polyacrylates that form long linear arrangements of droplets. All samples showed rather low viscosities, which is in contrast to similar systems of hydrophobically interconnected droplets. Here, we applied small-angle neutron scattering, dynamic light scattering and neutron spin-echo spectroscopy to characterise the dynamic properties of polyacrylate/microemulsion complexes in order to understand the origin of the low-viscous behaviour. We found that the electrostatic interactions lead to very dynamic complexes with high exchange rates of droplets and only a fraction of the droplets is contained within the transient complexes at a given time. These results were only accessible by the combination of different methods as one method alone would have given an incomplete picture.

Graphical abstract: Dynamics in polyelectrolyte/microemulsion complexes

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Supplementary files

Article information

27 Apr 2020
20 Aug 2020
First published
20 Aug 2020

This article is Open Access

Nanoscale Adv., 2020,2, 4722-4727
Article type

Dynamics in polyelectrolyte/microemulsion complexes

M. Simon, M. Gradzielski and I. Hoffmann, Nanoscale Adv., 2020, 2, 4722 DOI: 10.1039/D0NA00336K

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