Composition and thermal stability of SiO2-based hybrid materials TEOS-MTEOS system |
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| Authors: | Zaharescu M Jitianu A Br?ileanu A Madarász J Novák CS Pokol G |
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| Institution: | (1) Institute of Physical Chemistry, Bucharest Splaiul Independentei 202 Romanian Academy, Bucharest, Romania;(2) Budapest University of Technology and Economics Hungary, Hungary |
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| Abstract: | Hybrid materials with different amounts of organics permanently bound on the inorganic network obtained in the TEOS-MTEOS
(tetraethoxysilan-methyltriethoxysilan) system are used for obtaining coatings with different optical and mechanical properties.
To study the thermal stability of the mentioned materials, compositions with different molar ratios of the precursors were
prepared. The influence of the solvent and water amounts on the gelation process was also investigated. The gels obtained
were characterised by IR spectrometry and their decomposition temperatures were determined by DTA/TG. Thermal stability of
the gels is rather influenced by their composition than the conditions of the gelation process.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | SiO2-based hybrid materials thermal analysis TEOS-MTEOS system |
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