Water-vapor adsorption on calcium-boroaluminosilicate glass fibers

Lee A. Carman, Carlo G. Pantano

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The water-vapor adsorption isotherms of E-glass fibers were measured as a function of their aging in humid and aqueous environments, and of the amount of B2O3 in the glass composition. The specific surface area for adsorption was determined, independently, using inert gas adsorption, while X-ray photoelectron spectroscopy (XPS) was used to characterize the surface composition. In contrast to silica, where submonolayer coverage is observed in the low pressure range of the isotherm, these multicomponent glasses adsorbed the equivalent of 1 to 3 layers of water. The shape of the isotherms revealed that multilayer adsorption of water occurs on the fiber surfaces before the formation of a complete monolayer, i.e., water adsorption on these glass fibers was non-uniform, in general. It was found that the aging of these fibers in humid or aqueous environments greatly enhanced their capacity to adsorb water at low pressure, but the B2O3 content of the fibers had little effect.

Original languageEnglish (US)
Pages (from-to)40-46
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume120
Issue number1-3
DOIs
StatePublished - Apr 1 1990

All Science Journal Classification (ASJC) codes

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

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