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Silicon-29 NMR Study on the Initial Stage of the Co-Hydrolysis of Tetraethoxysilane and Methyltriethoxysilane

Published online by Cambridge University Press:  25 February 2011

Yoshiyuki Sugahara ,
Yoichi Tanaka ,
Shuji Sato ,
Kazuyuki Kuroda  and
Chuzo Kato
Yoshiyuki Sugahara
Affiliation:
Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo, 169, Japan.
Yoichi Tanaka
Affiliation:
Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo, 169, Japan.
Shuji Sato
Affiliation:
Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo, 169, Japan.
Kazuyuki Kuroda
Affiliation:
Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo, 169, Japan.
Chuzo Kato
Affiliation:
Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo, 169, Japan.
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Abstract

The hydrolysis and initial condensation processes of the mixtures of TEOS and MTES have been studied by GC-MS and 29Si-NMR in the systems with TEOS:MTES:ethyl alcohol:water:HCl=1:1:14:28:6×1O-4 and 0.5:1.5:14:28:6×10-4. Thedimer CH3(HO)2SiOSi(OH)3 possessing both TEOS- and MTES-derived units was identified, indicating that the condensation between a hydrolyzed TEOS-derived monomer and a hydrolyzed MTES-derived monomer was one of dominant dimerization.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 231
Copyright
Copyright © Materials Research Society 1992

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References

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