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Bentonite from Porto Santo Island, Madeira archipelago: surface properties studied by inverse gas chromatography

Published online by Cambridge University Press:  09 July 2018

N. Cordeiro ,
J. Silva ,
C. Gomes  and
F. Rocha
N. Cordeiro*
Affiliation:
CEM, Research Centre of Macaronesia Studies of the Foundation for Science and Technology (FCT), and Chemistry Department, University of Madeira, 9000-390 Funchal, Portugal
J. Silva
Affiliation:
GeoBioTec, Research Centre of the Foundation for Science and Technology (FCT), Geosciences Department, University of Aveiro, 3810-193 Aveiro, Portugal
C. Gomes
Affiliation:
GeoBioTec, Research Centre of the Foundation for Science and Technology (FCT), Geosciences Department, University of Aveiro, 3810-193 Aveiro, Portugal
F. Rocha
Affiliation:
GeoBioTec, Research Centre of the Foundation for Science and Technology (FCT), Geosciences Department, University of Aveiro, 3810-193 Aveiro, Portugal
*
*E-mail: [email protected]
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Abstract

The present paper shows the importance of Inverse Gas Chromatography (IGC) for the determination of the surface properties of bentonites. These properties are dispersive surface energy, acid-base properties, surface heterogeneity, sorption isotherms, BET surface areas and heat of sorption, using different probe molecules. IGC can contribute to the interpretation, prediction and optimization of the studied materials' properties. The paper focuses on two distinctive bentonite samples from Porto Santo Island, Madeira archipelago. In view of their potential value, achieved through their incorporation in products for dermopharmacy and dermocosmetics, particle size and particle surface properties are of fundamental importance.

Keywords

inverse gas chromatographybentoniteparticle size and surfacessurface propertiesdermopharmacydermocosmetics
Type
Research Article
Information
Clay Minerals , Volume 45 , Issue 1 , March 2010 , pp. 77 - 86
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2010

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