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Macrocellular Silica Monoliths Hierarchically Textured: Mesostructured Si-HIPE Materials

Published online by Cambridge University Press:  01 February 2011

F. Carn ,
A. Colin  and
R. Backov
F. Carn
Affiliation:
Centre de Recherche Paul Pascal CNRS UPR 8641, 115 Ave Albert Schweitzer, 33600 Pessac, France;
A. Colin
Affiliation:
Laboratoire du Futur, UMR CNRS-Rhodia FRE2771, IECB, 2 rue Robert Escarpit, 33607 Pessac, France.
R. Backov*
Affiliation:
Centre de Recherche Paul Pascal CNRS UPR 8641, 115 Ave Albert Schweitzer, 33600 Pessac, France;
*
backov@crpp-bordeaux.cnrs.fr
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Abstract

Interface between sol-gel process and soft matter appears recently as a very nice tool to generate new materials with complex textures or/and structures extended at various length scales. In this general context, hierarchical inorganic porous monoliths have been prepared using a double templates procedure, namely concentrated emulsion as a macroscopic pattern and mesoscopic micellar templates. The texture of those monoliths can vary dramatically playing either with the oil volume fraction, synthetic pH conditions or the emulsification process. These materials show interconnected macroporosity associated to vermicular-type mesostructuration with an average mesoporosity of 800 m2/g associated to bulk density as low as 0.08 g cm-3 which is comparable to values obtained for silica aerogel.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE9.4
Copyright
Copyright © Materials Research Society 2005

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References

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