Brushlike interactions between thermoresponsive microgel particles

F. Scheffold, P. Díaz-Leyva, M. Reufer, N. Ben Braham, I. Lynch, J.L. Harden

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)


Using a simplified microstructural picture we show that interactions between thermosensitive microgel particles can be described by a polymer brushlike corona decorating the dense core. The softness of the potential is set by the relative thickness L0 of the compliant corona with respect to the overall size of the swollen particle R. The elastic modulus in quenched solid phases derived from the potential is found to be in excellent agreement with diffusing wave spectroscopy data and mechanical rheometry. Our model thus provides design rules for the microgel architecture and opens a route to tailor rheological properties of pasty materials.
Original languageEnglish
JournalPhysical Review Letters
Issue number12
Publication statusPublished - 26 Mar 2010

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Copyright 2010 Elsevier B.V., All rights reserved.


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