Issue 8, 2022

Microgels react to force: mechanical properties, syntheses, and force-activated functions

Abstract

Microgels are colloidal polymer networks with high molar mass and properties between rigid particles, flexible macromolecules, and micellar aggregates. Their unique stimuli-responsiveness in conjunction with their colloidal phase behavior render them useful for many applications ranging from engineering to biomedicine. In many scenarios either the microgel's mechanical properties or its interactions with mechanical force play an important role. Here, we firstly explain microgel mechanical properties and how these are measured by atomic force microscopy (AFM), then we equip the reader with the synthetic background to understand how specific architectures and chemical functionalities enable these mechanical properties, and eventually we elucidate how the interaction of force with microgels can lead to the activation of latent functionality. Since the interaction of microgels with force is a multiscale and multidisciplinary subject, we introduce and interconnect the different research areas that contribute to the understanding of this emerging field in this Tutorial Review.

Graphical abstract: Microgels react to force: mechanical properties, syntheses, and force-activated functions

Article information

Article type
Tutorial Review
Submitted
05 jan 2022
First published
23 mrt 2022

Chem. Soc. Rev., 2022,51, 2939-2956

Microgels react to force: mechanical properties, syntheses, and force-activated functions

M. F. Schulte, E. Izak-Nau, S. Braun, A. Pich, W. Richtering and R. Göstl, Chem. Soc. Rev., 2022, 51, 2939 DOI: 10.1039/D2CS00011C

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