Dielectric spectroscopy as a probe for dynamic properties of compacted smectites
Résumé
The microdynamics of water and ions in two types of clays (montmorillonite and hectorite) was investigated with Broadband Dielectric Spectroscopy (40 Hz to 5 GHz). Four to five relaxations were observed depending on the relative humidity, the clay type and the nature of the compensating counterion (Na + or Cs +). A tentative assignment of the relaxations to physical mechanisms is proposed.
Domaines
Matériaux
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Cadène et al. - 2006 - Dielectric spectroscopy as a probe for dynamic pro.pdf (748.2 Ko)
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