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Issue 100, 2016, Issue in Progress
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Quantitative X-ray microscopic analysis of individual thermoresponsive microgel particles in aqueous solution

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Abstract

High resolution scanning soft X-ray transmission microscopy (STXM) has been employed to investigate individual thermoresponsive microgel particles in aqueous environments. STXM generates 2-dimensional projections with spatial resolutions in the regime of a few 10 s of nm. In the present study we are able to regain a 3D representation of the investigated specimen and observe the deswelling of the microgel particles upon heating, thus offering insight into the thermoresponsive behaviour of individual differently sized particles. We employ a 2-shell model that is able to derive the radial concentration profile of individual microgels particles and thus serves as a complementary method to scattering experiments that average over all particles. Furthermore, we are able to detect the different deswelling behaviour of the particle interior and its interface to the water environment.

Graphical abstract: Quantitative X-ray microscopic analysis of individual thermoresponsive microgel particles in aqueous solution

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Supplementary files

Article information


Submitted
09 Aug 2016
Accepted
11 Oct 2016
First published
11 Oct 2016

RSC Adv., 2016,6, 98228-98233
Article type
Paper

Quantitative X-ray microscopic analysis of individual thermoresponsive microgel particles in aqueous solution

A. Späth, B. A. Graf-Zeiler, G. Paradossi, S. Ghugare, G. Tzvetkov and R. H. Fink, RSC Adv., 2016, 6, 98228
DOI: 10.1039/C6RA20142C

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