Pore structure and mechanical properties of poly(methylsilsesquioxane) aerogels

K. Kanamori, G. Hayase, K. Nakanishi, T. Hanada

研究成果: Conference article査読

5 被引用数 (Scopus)

抄録

Organic-inorganic hybrid aerogels have been prepared by an acid/base two-step sol-gel reaction utilizing urea and surfactant. Polycondensation of methyltrimethoxysilane (MTMS) is promoted by the hydrolysis of urea, and the hydrophobicity of condensates is weakened by adequate cationic or nonionic surfactant. Aerogels with low bulk density (∼ 0.13 g cm-3) and high visible light transmittance (∼ 89 % at 550 nm through 10 mm-thick sample) are obtained. The resultant hybrid aerogels show high deformability and subsequent spring-back upon uniaxial compression owing to the lower cross-linking density and residual silanol density compared to silica, and to the presence of hydrophobic methyl groups in the network. Additional aging of as-prepared wet gels in water improved mechanical properties in the case of cationic surfactant system.

本文言語English
論文番号032001
ジャーナルIOP Conference Series: Materials Science and Engineering
18
SYMPOSIUM 2A
DOI
出版ステータスPublished - 2011 1月 1
イベント3rd International Congress on Ceramics, ICC 2011 - Osaka, Japan
継続期間: 2010 11月 142010 11月 18

ASJC Scopus subject areas

  • 材料科学(全般)
  • 工学(全般)

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