Drying of a Compressible Biporous Material
| Autor: | B. Maillet, D. Coutier-Murias, Daniel Grande, Philippe Coussot, T. Lerouge, Olivier Pitois, B. Le Droumaguet |
|---|---|
| Přispěvatelé: | Laboratoire Navier (NAVIER UMR 8205), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Liquid fraction Materials science General Physics and Astronomy 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Compression (physics) 01 natural sciences Matrix (geology) [CHIM.POLY]Chemical Sciences/Polymers Homogeneous Free surface 0103 physical sciences Compressibility Composite material 010306 general physics 0210 nano-technology [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] |
| Zdroj: | Physical Review Applied Physical Review Applied, American Physical Society, 2020, 13 (4), ⟨10.1103/PhysRevApplied.13.044061⟩ |
| ISSN: | 2331-7019 |
| Popis: | International audience; We study the consequences of drying on the internal structure of compressible materials containing pores of different sizes, which may be seen as model systems of sponges or wood. With the help of original techniques, we devise biporous media with different relative amounts of small and large pores, and follow the evolution of the liquid fraction simultaneously in each pore type. We show that in a compressible biporous medium with dispersed large pores (i.e., not directly connected) drying induces the homogeneous emptying of the large pores first, due to their compression, along with some compression of the small-pore matrix. In contrast, when the large pores are connected, they successively empty without compression. In both cases, the small pores start or finish to empty in the next stage, and a constant drying rate is observed during most of the time, thanks to liquid films maintaining the contact of the liquid network with the free surface of the sample. |
| Databáze: | OpenAIRE |
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