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Liquid Crystal Templating Effects on Silica Gels Synthesized using Quaternary Ammonium Surfactants

Published online by Cambridge University Press:  21 February 2011

T. Dabadie ,
A. Ayral ,
C. Guizard ,
L. Cot ,
J.C. Robert  and
O. Poncelet
T. Dabadie
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
A. Ayral
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
C. Guizard
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
L. Cot
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
J.C. Robert
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
O. Poncelet
Affiliation:
Laboratoire des Matériaux et Procédés Membranales, CNRS UMR 9987, ENSCM, 8, rue de l'Ecole Normale, 34053 Montpellier cédex 1, France;
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Abstract

The use of lyotropic liquid crystal phases is a promising tool in tailoring the porous structure of inorganic gels. In this work, we examine the effect of hexagonal liquid crystal phases produced with quaternary ammonium surfactants on the textural ordering of silica gels.

The sol-gel polymerization of the silicon alkoxide precursor (tetramethoxysilane) is followed by 29Si NMR and rheological measurements. The structural evolution of the material from the starting sol to the thermally treated gel is studied using low angle X-ray diffraction. The textural characteristics of the gels are correlated with the nature of the surfactant molecules.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 849
Copyright
Copyright © Materials Research Society 1998

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References

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