Abstract
Polysiloxane formation in dimethyldiethoxysilane (DMDES)-ethyl alcohol (EtOH(D))-oxalic acid (OA) (DMDES:EtOH(D):OA=1:2:0.5) and DMDES-dimethylsulfoxide (DMSO)-OA (DMDES:DMSO:OA=1:2:0.5) systems was investigated by gas chromatography-mass spectrometry and 29Si-nuclear magnetic resonance. While the DMDES-EtOH(D)-OA system was homogeneous, the DMDES-DMSO-OA system consisted of two immiscible phases. In both systems, ethoxy-terminated linear oligomers ((EtO)Me2SiO(Me2SiO)nSiMe2(OEt); n=0–4, Et = C2H5, Me = CH3) and cyclic tetramer ((Me2SiO)4) were identified. The reaction mechanism for polysiloxane formation is discussed.
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Brinker, C.J. and Scherer, G.W., Sol-Gel Science: The Physics and Chemistry of So-Gel Processing (Academic Press, San Diego, 1990) p. 108.
Corriu, R.J.P., Leclercq, D., lefèvre, P., Mutin, P.H., and Vioux, A., J. Non-Cryst. Solids, 146, 301 (1992).
Corriu, R.J.P., Leclercq, D., lefèvre, P., Mutin, P.H., and Vioux, A., J. Mater. Chem., 2, 673 (1992).
Corriu, R., Leclercq, D., lefèvre, P., Mutin, P.H., and Vioux, A., Chem. Mater. 4, 961 (1992).
Sugahara, Y., Sato, S., Kuroda, K., and Kato, C., J. Non-Cryst. Solids, 147 & 148, 24 (1992).
Day, V.W., Klemperer, W.G., Mainz, V.V., and Millar, D.M., J. Am. Chem. Soc., 107, 8262 (1985).
Damrau, U. and Marsmann, H.C., J. Non-Cryst. Solids. 135, 15 (1992).
Sugahara, Y., Okada, S., Kuroda, K., and Kato, C., J. Non-Cryst. Solids 139, 25 (1992).
Jada, S.S., J. Am. Ceram. Soc., 70, C-298 (1987).
Pope, E.J.A. and Mackenzie, J.D., J. Non-Cryst. Solids, 87, 185 (1986).
Campero, A., Arroyo, R., Sanchez, C., and Livage, I., in: Ultrastructure Processing of Advanced Materials, eds Mackenzie, J.D. and Ulrich, D.R., (John Wiley & Sons, New York, 1988), p. 327.
Sanchez, C., Livage, L., Henry, M., and Babonneau, F., J. Non-Cryst. Solids, 65, 100 (1988).
Boonstra, A.H. and Baken, J.M.E., J. Non-Cryst. Solids, 122, 171 (1990).
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Chiba, J., Sugahara, Y. & Kuroda, K. Novel polysiloxane formation process from dimethyldiethoxysilane in the presence of oxalic acid. J Sol-Gel Sci Technol 2, 153–156 (1994). https://doi.org/10.1007/BF00486231
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DOI: https://doi.org/10.1007/BF00486231