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Issue 39, 2018
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Flow and fracture near the sol–gel transition of silica nanoparticle suspensions

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Abstract

We analyze the evolution of the mechanical response of a colloidal suspension to an external tensile stress, from fracture to flow, as a function of the distance from the sol–gel transition. We cease to observe cracks at a finite distance from the transition. In an intermediate region where the phenomenon is clearly hysteretic, we observe the coexistence of both flow and fracture. Even when cracks are observed, the material in fact flows over a distance that increases in the vicinity of the transition.

Graphical abstract: Flow and fracture near the sol–gel transition of silica nanoparticle suspensions

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Publication details

The article was received on 18 Jun 2018, accepted on 17 Sep 2018 and first published on 17 Sep 2018


Article type: Paper
DOI: 10.1039/C8SM01247D
Citation: Soft Matter, 2018,14, 8036-8043
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    Flow and fracture near the sol–gel transition of silica nanoparticle suspensions

    G. E. Gimenes and E. Bouchaud, Soft Matter, 2018, 14, 8036
    DOI: 10.1039/C8SM01247D

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