Imbibition on a porous layer: dynamical and mechanical characterization
| Autor: | Marguerite Léang, Frédérique Giorgiutti-Dauphiné, Lay-Theng Lee, Ludovic Pauchard |
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| Přispěvatelé: | Fluides, automatique, systèmes thermiques (FAST), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, LLB - Matière molle et biophysique (MMB), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Drop (liquid) technology industry and agriculture 02 engineering and technology General Chemistry Penetration (firestop) equipment and supplies 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Cracking Permeability (earth sciences) medicine Imbibition Composite material Swelling medicine.symptom 0210 nano-technology Porous medium Porosity [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] |
| Zdroj: | Soft Matter Soft Matter, Royal Society of Chemistry, 2019, 15 (10), pp.2277-2283. ⟨10.1039/c8sm02295j⟩ Soft Matter, 2019, 15 (10), pp.2277-2283. ⟨10.1039/c8sm02295j⟩ |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/c8sm02295j⟩ |
| Popis: | International audience; Solvent penetration in porous layers was analyzed using dynamical and mechanical characterization. Spreading dynamics of a solvent drop in a porous substrate provided parameters of the porous medium such as permeability and porosity. These measurements are relevant for many porous systems, for example paintings or porous varnishes and resins… We present direct visualizations of the drop as well as of the wet zone during the imbibition process and we evidence three distinct regimes. Experiments performed with various porous systems and different solvents highlight a universal behavior. The mechanical properties during the imbibition process are deduced through indentation testing measurements. We show that solvent penetration is responsible for the appearance of a viscous component in the system. A characteristic time depending on the solvent and on the porous medium is then deduced. The system recovers its initial mechanical properties and no swelling nor cracking is observed contrary to the case of paintings. This result tends to prove that visco-plastic properties are required to observe swelling or cracking. |
| Databáze: | OpenAIRE |
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