Permeability and structure of resorcinol-formaldehyde gel

G. W. Scherer, C. Alviso, R. Pekala, J. Gross

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations

Abstract

The permeability (D) of resorcinol-formaldehyde (RF) gels was measured using a beam-bending technique. For gels made at various solids contents and with different catalyst contents, the permeabilities ranged over a factor of approximately 50; the pore radii inferred from D varied from approximately 3 to 30 nm. Pore radii obtained on RF aerogels using nitrogen desorption were severely affected by compression of the aerogel by capillary forces (resulting from the surface tension of liquid nitrogen). After correction for that effect, the desorption data were found to be in very good agreement with the pore sizes calculated from D.

Original languageEnglish (US)
Pages (from-to)497-503
Number of pages7
JournalMaterials Research Society Symposium - Proceedings
Volume431
StatePublished - Dec 1 1996
EventProceedings of the 1996 MRS Spring Meeting - San Francisco, CA, USA
Duration: Apr 8 1996Apr 11 1996

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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