Journal of Asian Ceramic Societies (Jun 2017)

Fabrication of hydrophobic polymethylsilsesquioxane aerogels by a surfactant-free method using alkoxysilane with ionic group

  • Gen Hayase,
  • Shuya Nagayama,
  • Kazuya Nonomura,
  • Kazuyoshi Kanamori,
  • Ayaka Maeno,
  • Hironori Kaji,
  • Kazuki Nakanishi

DOI
https://doi.org/10.1016/j.jascer.2017.02.003
Journal volume & issue
Vol. 5, no. 2
pp. 104 – 108

Abstract

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Phase separation control is an important factor to prepare a porous monolith by an aqueous sol–gel reaction. Here, we report a surfactant-free synthesis method to obtain hydrophobic polymethylsilsesquioxane aerogels by copolymerizing a cationic-functionalized alkoxysilane N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride. The resultant materials have low-density, high visible-light transmittance, and high thermal insulating equivalent to those of prepared under the presence of surfactant.

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