Swelling of ionic microgels embedded in a matrix of neutral microgels: a SANS with contrast variation study
Soft deformable microgels adapt their size and shape depending on the solution packing fraction. Studies on the response to crowding of both neutral and ionic microgels have been conducted using SANS with contrast variation to probe the form factor of individual microgels as a function of the solution concentration. The possibility to embed few ionic microgels in a majority of neutral microgels allows to study the swelling capability of the ionic microgels in crowded environment of neutral microgels. This is important to understand the role of electrostatic interaction in the deswelling/compression of an individual ionic microgel. Here we propose to study ionic hydrogenated microgels in a matrix of deuterated neutral microgels (contrast matched by the H2O/D2O mixture) in solutions at different pH. Since the ionic microgels will have a size of ~150 nm at pH = 3 and ~220 nm at pH = 9, we plan to use two families of deuterated neutral microgels with comparable sizes. We also plan to change the size ratio and see the effect on the deswelling of larger ionic hydrogenated microgels (~220 nm) embedded in a matrix of small neutral deuterated microgels (~150nm).
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The recommended format for citing this dataset in a research publication is in the following format:
Andrea Scotti; PETRUNIN Alexander; RICHTERING Walter and SCHWEINS Ralf. (2021). Swelling of ionic microgels embedded in a matrix of neutral microgels: a SANS with contrast variation study. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2067
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