Drying of channels by evaporation through a permeable medium.
biomimetic
diffusion
drying
leaf
pervaporation
Journal
Journal of the Royal Society, Interface
ISSN: 1742-5662
Titre abrégé: J R Soc Interface
Pays: England
ID NLM: 101217269
Informations de publication
Date de publication:
28 02 2019
28 02 2019
Historique:
entrez:
9
4
2019
pubmed:
9
4
2019
medline:
5
3
2020
Statut:
ppublish
Résumé
We study the drying of isolated channels initially filled with water moulded in a water-permeable polymer (polydimethylsiloxane, PDMS) by pervaporation, when placed in a dry atmosphere. Channel drying is monitored by tracking a meniscus, separating water from air, advancing within the channels. The role of two geometrical parameters, the channel width and the PDMS thickness, is investigated experimentally. All data show that drying displays a truncated exponential dynamics. A fully predictive analytical model, in excellent agreement with the data, is proposed to explain such a dynamics, by solving water diffusion both in the PDMS layer and in the gas inside the channel. This drying process is crucial in geological or biological systems, such as rock disintegration or the drying of plant leaves after cavitation and embolism formation.
Identifiants
pubmed: 30958181
doi: 10.1098/rsif.2018.0690
pmc: PMC6408343
doi:
Substances chimiques
Silicones
0
polymethylsiloxane
0
Water
059QF0KO0R
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
20180690Références
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