Effect of Inorganic Components on Thermal Stability of Methylsiloxane-Based Inorganic/Orgnaic Hybrids
- 69 Downloads
The thermal decomposition behavior of methylsiloxane-based inorganic/organic hybrids containing an inorganic component derived from metal alkoxides such as Si(OCH3)4, Al(OsC4H9)3, Ti(OiC3H7)4 and Nb(OC2H5)5 was investigated by means of thermogravimetric and differential thermal analysis (TG-DTA), Fourier transform infrared (FT-IR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. The decomposition temperature of methyl groups in methylsiloxane-based inorganic/organic hybrids containing an inorganic component derived from metal alkoxides was higher than that in the methylsiloxane-based inorganic/organic hybrid prepared from only CH3Si(OC2H5)3. In particular, when incorporating Nb and Ti inorganic components, methyl groups in methylsiloxane-based inorganic/organic hybrids decomposed at about 100 and 200∘C higher temperatures, respectively, than those in the methylsiloxane-based inorganic/organic hybrid prepared from only CH3Si(OC2H5)3. The incorporation of an inorganic component other than siloxane into methylsiloxane-based inorganic/organic hybrids was found to thermally stabilize the methyl groups of methylsiloxane networks.
Keywordsinorganic/organic hybrids metal alkoxides thermal stability methylsiloxane FT-IR NMR TG-DTA
Unable to display preview. Download preview PDF.
- 1.H. Schmidt, in Better Ceramics Through Chemistry I, edited by C. J. Brinker, D. E. Clark and D. R. Ulrich (Mater. Res. Soc. Proc. 32, North Holland, New York, 1984), p.~327.Google Scholar
- 2.G.L. Wilkes, B. Orler, and H. Hung, Polym. Prepr. (Am. Chem. Soc. Div. Polym. Chem.) 26, 300 (1985).Google Scholar
- 9.N. Yamada, I. Yoshinaga, and S. Katayama, J. Ceram. Soc. Jpn. 107, 1160 (1999).Google Scholar
- 15.H. Uchihashi, N. Tohge, and T. Minami, J. Ceram. Soc. Jpn. 97, 396 (1989).Google Scholar
- 21.K. Izumi, H. Tanaka, Y. Uchida, N. Tohge, and T. Minami, J. Non-Cryst. Solids 147/148, 483 (1992).Google Scholar