Poroelastic Theory Applied to the Adsorption-Induced Deformation of Vitreous Silica
| Autor: | Alain Polian, Benoit Coasne, Benoit Ruffle, Mathieu Kint, Marie Foret, Julien Haines, René Vacher, Jérôme Rouquette, Coralie Weigel |
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| Přispěvatelé: | Multi-Scale Material Science for Energy and Environment ((MSC)2 UMI3466 CNRS-MIT), CNRS-MIT, MIT Department of Civil and Environmental Engineering (CEE), Massachusetts Institute of Technology (MIT), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Silica glass Poromechanics Thermodynamics chemistry.chemical_element Penetration (firestop) Microporous material Condensed Matter::Disordered Systems and Neural Networks Surfaces Coatings and Films Condensed Matter::Soft Condensed Matter Neon Adsorption chemistry Physics::Atomic and Molecular Clusters Materials Chemistry Compressibility [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Physical and Theoretical Chemistry Helium |
| Zdroj: | Journal of Physical Chemistry B Journal of Physical Chemistry B, 2014, 118, pp.14519-14525. ⟨10.1021/jp5094383⟩ Journal of Physical Chemistry B, American Chemical Society, 2014, 118, pp.14519-14525. ⟨10.1021/jp5094383⟩ |
| ISSN: | 1520-6106 1520-5207 |
| Popis: | International audience; When vitreous silica is submitted to high pressures under helium atmosphere, the change in volume observed is much smaller than expected from its elastic properties. 1 It results from helium penetration into the interstitial free volume of the glass network. We present here the results of concurrent spectroscopic experiments using either helium or neon and molecular simulations relating the amount of gas adsorbed to the strain of the network. We show that a generalized poromechanical approach, describing the elastic properties of microporous materials upon adsorption, can be applied success-fully to silica glass in which the free volume exists only at the sub-nanometer scale. In that picture, the adsorption-induced deformation accounts for the small apparent compressibility of silica observed in experiments. |
| Databáze: | OpenAIRE |
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