We study the dynamics of the dehydration process of a hydrogel with a cavity filled with water. We identify two transient phases: the first one dominated by an inflatable-balloon deformation mode, and the second by a suction effect, determining highly not homogeneous deformation modes of the hydrogel walls. This last phase triggers negative pressures into the cavity up to the typical values of water cavitation. An analysis of the factors allowing cavitation pressure to form inside the cavity is proposed, to allow for precise tuning of the key geometrical and material parameters.
Driving water cavitation into a hydrogel cavity / Curatolo, Michele; Nardinocchi, Paola; Teresi, Luciano. - In: SOFT MATTER. - ISSN 1744-6848. - ELETTRONICO. - 14:12(2018), pp. 2310-2321. [10.1039/C8SM00100F]
Driving water cavitation into a hydrogel cavity
Michele CuratoloMembro del Collaboration Group
;Paola Nardinocchi
Membro del Collaboration Group
;
2018
Abstract
We study the dynamics of the dehydration process of a hydrogel with a cavity filled with water. We identify two transient phases: the first one dominated by an inflatable-balloon deformation mode, and the second by a suction effect, determining highly not homogeneous deformation modes of the hydrogel walls. This last phase triggers negative pressures into the cavity up to the typical values of water cavitation. An analysis of the factors allowing cavitation pressure to form inside the cavity is proposed, to allow for precise tuning of the key geometrical and material parameters.| File | Dimensione | Formato | |
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