par Torbeyns, Simon;Terwagne, Denis 
Référence APS March Meeting 2018 (March 5–9, 2018: Los Angeles (USA))
Publication Non publié, 2018-03-06
Référence APS March Meeting 2018 (March 5–9, 2018: Los Angeles (USA))
Publication Non publié, 2018-03-06
Communication à un colloque
| Résumé : | When laying a liquid droplet on a piece of fabric, the droplet can bounce off the fabric, sit on it or totally impregnate it. In this paper, we investigate the transition in between the sitting situation and the impregnating situation. As it has been shown in a number of recent works, totally wetting liquid droplets interacting with a network of fibers lead to different impregnation morphologies. Here, we use partially wetting liquid droplets that lead to other morphologies where droplets sit on the fabric without impregnating the network of fibers. We show that a transition between "sitting on" and "passing through" occurs that depends on the number of fibers and their geometry, the liquid that we use and its wettability on the surface of the fibers. Based on our observation and careful measurements, we developed a model that predicts the transition and the final morphology of the droplets on the fibers array. This work opens the path to study the impregnation of liquids in more complex fibers geometries and should find application in the textile and wearable industries. *We would like to thank the F.R.S.-FNRS for financial support. |
