Compressing some sol-gel materials reduces their stiffness: a textural analysis

[en] The mechanical behaviour of two series of silica and of resorcinol xerogels is analyzed by mercury porosimetry. The data are expressed as pressure-density curves, which enables textural information to be obtained. In particular, it is shown that some of the analyzed samples exhibit a marked lowering of their mechanical stiffness upon compression. This observation is analyzed in terms of the collapse of the sample’s porosity and of the heterogeneity of the microstructure.

Disciplines :

Chemistry
Materials science & engineering

Author, co-author :

Gommes, Cédric ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique

Job, Nathalie ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique

Blacher, Silvia ; Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement

Pirard, Jean-Paul ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique

Language :

English

Title :

Compressing some sol-gel materials reduces their stiffness: a textural analysis

Publication date :

2007

Journal title :

Studies in Surface Science and Catalysis

ISSN :

0167-2991

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

160

Pages :

193-200

Peer reviewed :

Peer reviewed

Available on ORBi :

since 10 February 2009

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