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. 2021 Jan 24;3(2):192. doi: 10.1007/s42452-021-04172-9

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Sauter Mean Radius for a pure foam and two fibre-foam dispersions as a function of time. The pure foam had an initial liquid fraction of 0.25. Both fibre-foam dispersions contained the same mass of fibres with initial liquid fractions 0.25 and 0.50 respectively. The pure foam continues to coarsen until there is no foam remaining, whereas where fibres have been added, coarsening ceases after approximately 30 minutes, regardless of the initial liquid fraction. Solid lines are fits to the coarsening law, $r_{32} \propto {(t - t_{o})}^{1 / 2}$