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Issue 41, 2018
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Quantitative relationship between cavitation and shear rheology

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Cavitation rheology is a powerful, simple, and inexpensive technique to study the moduli of polymer gels, however its use has not yet become widespread because few studies to date have directly compared this technique to traditional oscillatory shear rheology. Herein, we report a quantitative relationship between the gel modulus determined using cavitation and shear rheology for three series of model gels whose networks are composed of (1) permanently covalent, (2) dynamic-covalent, and (3) physical hydrogen-bond crosslinks. We determine a simple proportionality constant that allows for conversion of the moduli obtained from both types of experiments and is highly dependent on the bond energy responsible for gelation. This study provides a framework for researchers in a broad range of disciplines who can exploit the ease of cavitation rheology and place their results in the context of traditional oscillatory shear rheology.

Graphical abstract: Quantitative relationship between cavitation and shear rheology

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The article was received on 31 Jul 2018, accepted on 06 Oct 2018 and first published on 12 Oct 2018

Article type: Paper
DOI: 10.1039/C8SM01560K
Citation: Soft Matter, 2018,14, 8395-8400

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    Quantitative relationship between cavitation and shear rheology

    K. C. Bentz, N. Sultan and D. A. Savin, Soft Matter, 2018, 14, 8395
    DOI: 10.1039/C8SM01560K

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