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On the sensitivity of alginate rheology to composition

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Abstract

The linear response of alginate-phenyl boronic acid (Alg-PBA) esters shows a universal, composition-independent viscoelastic fluid-like behaviour. Reversible association of alginates governs their rheology at all compositions (viz. at all alginate concentrations and solution pH). However, their high strain behaviour is very sensitive to composition. Tuning composition affords liquids that neck to form filaments capable of being drawn to large elongations without failure. We interpret our data by invoking strain-dependent association and dissociation rates for the alginates. High association rates at high strain result in materials with viscoelastic liquid like behaviour.

Graphical abstract: On the sensitivity of alginate rheology to composition

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Publication details

The article was received on 13 Oct 2018, accepted on 06 Dec 2018 and first published on 07 Dec 2018


Article type: Communication
DOI: 10.1039/C8SM02093K
Citation: Soft Matter, 2019, Advance Article
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    On the sensitivity of alginate rheology to composition

    K. Suresh, M. Häring, G. Kumaraswamy and D. Díaz Díaz, Soft Matter, 2019, Advance Article , DOI: 10.1039/C8SM02093K

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