Synthesis and characterization of transparent silica-based aerogels using methyltrimethoxysilane precursor

Masayuki Nogami, Shohei Hotta, Kazumasa Kugimiya, Hideaki Matsubara

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Silica-based aerogels with high transparency and high bending strength were prepared using methyltrimethoxysilane and non-ionic surfactant under supercritical drying condition of CO2. Non-ionic surfactant, ethylene oxide/propylene oxide block copolymer, was appropriate to form the three dimensional-connected thinner fibers of silica skeletons, which was extruded by soaking the wet gel in hot water at 50 °C, resulting in the formation of porous materials having small pores with narrow size distribution. The transparency of aerogels increased with decreasing the pore size, reaching to higher than 65 and 88% at 400 and 600 nm wavelength, respectively, for 10 mm thickness of sample. The formation of fiber skeletons were discussed using small angle X-ray scattering experiments.

Original languageEnglish
Pages (from-to)107-113
Number of pages7
JournalJournal of Sol-Gel Science and Technology
Volume56
Issue number2
DOIs
Publication statusPublished - 2010 Nov

Keywords

  • Aerogel
  • Methyltrimethoxysilane
  • Rayleigh scattering
  • Silica
  • Supercritical drying
  • Transparency

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

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