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X-Ray Microtomography Studies of Tannin-Derived Organic and Carbon Foams

Published online by Cambridge University Press:  27 August 2009

G. Tondi ,
S. Blacher ,
A. Léonard ,
A. Pizzi ,
V. Fierro ,
J.M. Leban  and
A. Celzard
G. Tondi
Affiliation:
Nancy University, ENSTIB-LERMAB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal cedex 9, France Nancy University, Institut Jean Lamour – UMR CNRS 7198, Département Chimie et Physique des Solides et des Surfaces, ENSTIB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal cedex 9, France
S. Blacher
Affiliation:
University of Liège, Laboratory of Chemical Engineering, Department of Applied Chemistry, F.R.S.-FNRS, B6C – Sart Tilman, 4000 Liège, Belgium
A. Léonard
Affiliation:
University of Liège, Laboratory of Chemical Engineering, Department of Applied Chemistry, F.R.S.-FNRS, B6C – Sart Tilman, 4000 Liège, Belgium
A. Pizzi
Affiliation:
Nancy University, ENSTIB-LERMAB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal cedex 9, France
V. Fierro
Affiliation:
Nancy University, Institut Jean Lamour – UMR CNRS 7198, Département Chimie et Physique des Solides et des Surfaces, Faculté des Sciences & Techniques, BP 239, 54506 Vandœuvre lès Nancy cedex, France
J.M. Leban
Affiliation:
INRA, LERFOB – UMR 1092, Equipe de Recherche Qualité du Bois, 54280 Champenoux, France
A. Celzard*
Affiliation:
Nancy University, Institut Jean Lamour – UMR CNRS 7198, Département Chimie et Physique des Solides et des Surfaces, Faculté des Sciences & Techniques, BP 239, 54506 Vandœuvre lès Nancy cedex, France Nancy University, Institut Jean Lamour – UMR CNRS 7198, Département Chimie et Physique des Solides et des Surfaces, ENSTIB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal cedex 9, France
*
Corresponding author. E-mail: [email protected]
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Abstract

Tannin-based rigid foams of different bulk densities and their carbonized counterparts were investigated for the first time by X-ray microtomography. This method allowed acquisition of three-dimensional pictures of such highly porous materials. Through mathematical treatment of the images, extremely useful physical characteristics such as porosity, fraction of open cells, connectivity, tortuosity, and pore-size distribution were determined as a function of the foam's density. The obtained information was compared with independent data derived from pycnometry measurements and scanning electron microscope image analysis. The agreement was shown to be acceptable in the limit of the accuracy of the laboratory microtomograph (4 μm). Moreover, recalculating properties like permeability were shown to be quite possible based on the results of standard microtomography data.

Keywords

rigid foammicrotomographyimage analysispermeabilitytortuosityporositytannincarbon
Type
Tomography Applications
Information
Microscopy and Microanalysis , Volume 15 , Issue 5 , October 2009 , pp. 384 - 394
Copyright
Copyright © Microscopy Society of America 2009

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