Drying of channels by evaporation through a permeable medium

Benjamin Dollet*, Jean-François Louf, Mathieu Alonzo, Kaare H. Jensen, Philippe Marmottant

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
Article number20180690
JournalJournal of the Royal Society Interface
Volume16
Issue number151
Number of pages12
ISSN1742-5689
DOIs
Publication statusPublished - 2019

Keywords

  • drying
  • pervaporation
  • leaf
  • diffusion
  • biomimetic

Cite this

Dollet, Benjamin ; Louf, Jean-François ; Alonzo, Mathieu ; Jensen, Kaare H. ; Marmottant, Philippe. / Drying of channels by evaporation through a permeable medium. In: Journal of the Royal Society Interface. 2019 ; Vol. 16, No. 151.
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Drying of channels by evaporation through a permeable medium. / Dollet, Benjamin; Louf, Jean-François; Alonzo, Mathieu; Jensen, Kaare H.; Marmottant, Philippe.

In: Journal of the Royal Society Interface, Vol. 16, No. 151, 20180690, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Drying of channels by evaporation through a permeable medium

AU - Dollet, Benjamin

AU - Louf, Jean-François

AU - Alonzo, Mathieu

AU - Jensen, Kaare H.

AU - Marmottant, Philippe

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

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