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

Masayuki Nogami, Shohei Hotta, Kazumasa Kugimiya, Hideaki Matsubara

研究成果: Article査読

7 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)107-113
ページ数7
ジャーナルJournal of Sol-Gel Science and Technology
56
2
DOI
出版ステータスPublished - 2010 11月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 化学 (全般)
  • 生体材料
  • 凝縮系物理学
  • 材料化学

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