Dynamics of drop absorption by a swelling fiber - Sorbonne Université
Journal Articles Soft Matter Year : 2021

Dynamics of drop absorption by a swelling fiber

Suzie Protière
Camille Duprat

Abstract

Swelling of individual fibres exposed to a favorable solvent may affect the mechanical properties or shape of a fibrous material. We provide experimental results of the absorption dynamics of a single drop deposited on a swellable fibre and show that the total absorption time is highly dependent on the fibre geometry and drop volume. The curvature of the fibre prevents the total spreading of a drop even if the fluid is fully wetting the fibre. For drops larger than a critical volume, a local saturation of the fibre is thus reached below the drop, leading to a strong increase in the total absorption time. These observations are then rationalized with a simple pseudo-diffusive model to understand the drop absorption and fibre swelling dynamics. This minimal model provides quantitative predictions of the total absorption time.
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Dates and versions

hal-03389048 , version 1 (20-10-2021)

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Pierre van de Velde, Suzie Protière, Camille Duprat. Dynamics of drop absorption by a swelling fiber. Soft Matter, 2021, 17 (25), pp.6168-6175. ⟨10.1039/cXsm00000x/⟩. ⟨hal-03389048⟩
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