Sol-gel synthesis, porous structure, and mechanical property of polymethylsilsesquioxane aerogels
スポンサーリンク
概要
- 論文の詳細を見る
Organic-inorganic hybrid aerogels with polymethylsilsesquioxane (PMSQ, CH3SiO1.5) composition have been synthesized by a modified two-step sol-gel process. The precursor alkoxysilane is hydrolyzed in a weakly acidic condition, and subsequently allowed to undergo polycondensation in a weakly basic condition which is brought up by the hydrolysis of urea. Two kinds of surfactant (nonionic and cationic) have been utilized to suppress macroscopic phase separation. The resultant porous morphology could be modified by the kind of surfactant used. Small angle X-ray scattering (SAXS) and nitrogen adsorption have been employed to assess the porous morphology and it is found that the obtained PMSQ aerogels consist of aggregated particles and each particle contains micropores. Compressive mechanical properties have also been discussed based on the obtained information on porous morphology.
- 公益社団法人 日本セラミックス協会の論文
著者
-
NAKANISHI Kazuki
Department of Chemistry, Graduate School of Science, Kyoto University
-
Hanada Teiichi
Department Of Chemistry Graduate School Of Science Kyoto University
-
KANAMORI Kazuyoshi
Department of Chemistry, Graduate School of Science, Kyoto University
-
Kanamori Kazuyoshi
Dep. Of Chemistry Graduate School Of Sci. Kyoto Univ.
-
Nakanishi Kazuki
Department Of Chemistry Graduate School Of Science Kyoto University
関連論文
- Sol-Gel Process of Oxides Accompanied by Phase Separation
- Organic-inorganic hybrid aerogels with high mechanical properties via organotrialkoxysilane-derived sol-gel process
- Organic-inorganic hybrid aerogels with high mechanical properties via organotrialkoxysilane-derived sol-gel process
- Structural Investigation of Glass System Na_2O-Ga_2O_3-SiO_2
- Formation of Interconnected Macropores in Sm^-doped Silicate Glasses through Phase Separation : Fabrication of Photosensitive and Dielectrically Disordered Materials
- Tailoring Photonic Strength in Monolithic Macroporous Silica for Random Media
- Blue Photoluminescence from Si-Doped Amorphous Silica Films by RF Sputtering
- Fabrication of Optically Active Er^-Doped Bi_2O_3-SiO_2 Glass Thin Films by Pulsed Laser Deposition
- Effect of La addition on thermal microstructural evolution of macroporous alumina monolith prepared from ionic precursors(Aqueous Solution Science for Ceramic Processing II)
- Sol-gel synthesis, porous structure, and mechanical property of polymethylsilsesquioxane aerogels
- Phase Separation in Silica Sol-Gel System Containing Poly(ethylene oxide) II. Effects of Molecular Weight and Temperature
- Facile preparation of monolithic magnesium titanates with hierarchical porosity
- Monolithic silica column for in-tube solid-phase microextraction coupled to high-performance liquid chromatography
- Thermodynamics of Aggregation of Two Proteins(Cross-disciplinary physics and related areas of science and technology)
- Tailoring Photonic Strength in Monolithic Macroporous Silica for Random Media
- Advances in monolithic porous materials tailored in liquid media: around inorganic oxides and organic polymers