Synthesis of mullite fibre from an aluminosiloxane precursor

Toshinobu Yogo; Ilhan A. Aksay

doi:10.1039/jm9940400353

Synthesis of mullite fibre from an aluminosiloxane precursor

Toshinobu Yogo, Ilhan A. Aksay

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15 Scopus citations

Abstract

Mullite fibre was successfully synthesized by pyrolysis of aluminosiloxane formed from ethyl 3-oxobutanoatodi-isopropoxyaluminium and di-(sec-butoxy) aluminoxytriethoxysilane. Aluminosiloxane increased in viscosity with increasing coordination number of aluminium, which was analysed by ²⁷Al NMR spectroscopy. The viscosity of aluminosiloxane was controlled by the amount of added glacial acetic acid as well as the working temperature for the spinning of precursor fibre. Aluminosiloxane gave amorphous SiO₂-Al ₂O₃ at 500°C, which began to crystallize to mullite at 930°C. Single-phase mullite was produced on heating to 1000°C for 1 h. The polymer fibre spun from aluminosiloxane was pyrolysed yielding crack-free mullite fibre at 1000°C for 1 h.

Original language	English (US)
Pages (from-to)	353-359
Number of pages	7
Journal	Journal of Materials Chemistry
Volume	4
Issue number	2
DOIs	https://doi.org/10.1039/jm9940400353
State	Published - 1994

All Science Journal Classification (ASJC) codes

General Chemistry
Materials Chemistry

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title = "Synthesis of mullite fibre from an aluminosiloxane precursor",

abstract = "Mullite fibre was successfully synthesized by pyrolysis of aluminosiloxane formed from ethyl 3-oxobutanoatodi-isopropoxyaluminium and di-(sec-butoxy) aluminoxytriethoxysilane. Aluminosiloxane increased in viscosity with increasing coordination number of aluminium, which was analysed by 27Al NMR spectroscopy. The viscosity of aluminosiloxane was controlled by the amount of added glacial acetic acid as well as the working temperature for the spinning of precursor fibre. Aluminosiloxane gave amorphous SiO2-Al 2O3 at 500°C, which began to crystallize to mullite at 930°C. Single-phase mullite was produced on heating to 1000°C for 1 h. The polymer fibre spun from aluminosiloxane was pyrolysed yielding crack-free mullite fibre at 1000°C for 1 h.",

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AU - Yogo, Toshinobu

AU - Aksay, Ilhan A.

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AB - Mullite fibre was successfully synthesized by pyrolysis of aluminosiloxane formed from ethyl 3-oxobutanoatodi-isopropoxyaluminium and di-(sec-butoxy) aluminoxytriethoxysilane. Aluminosiloxane increased in viscosity with increasing coordination number of aluminium, which was analysed by 27Al NMR spectroscopy. The viscosity of aluminosiloxane was controlled by the amount of added glacial acetic acid as well as the working temperature for the spinning of precursor fibre. Aluminosiloxane gave amorphous SiO2-Al 2O3 at 500°C, which began to crystallize to mullite at 930°C. Single-phase mullite was produced on heating to 1000°C for 1 h. The polymer fibre spun from aluminosiloxane was pyrolysed yielding crack-free mullite fibre at 1000°C for 1 h.

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Synthesis of mullite fibre from an aluminosiloxane precursor

Abstract

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