Ultraporous materials with low permeability

J. Phalippou, G. W. Scherer, T. Woignier, D. Bourret, R. Sempéré

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Physical and chemical properties of silica aerogels are influenced by their texture. Silica aerogels exhibit both high porosity and low permeability. This low permeability results from the small size of the pores. The behaviour of gels subjected to a stress is linked to permeability and low rigidity. It is shown that the interaction of the solid network with the fluid within the pores is responsible for stress development which in turn gives rise to easily measured strains. Interactions between the solid and a liquid, a supercritical fluid and finally a gas are investigated. Experiments are reported to demonstrate the solid-fluid interaction.

Original languageEnglish (US)
Pages (from-to)64-72
Number of pages9
JournalJournal of Non-Crystalline Solids
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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