Quantitative analysis of small angle neutron scattering data from montmorillonite dispersions |
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Authors: | Helen E. Hermes Henrich Frielinghaus Wim Pyckhout-Hintzen Dieter Richter |
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Affiliation: | Institut für Festkörperforschung, Research Centre Jülich, 52425 Jülich, Germany |
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Abstract: | A new model is presented which can describe quantitatively the small angle neutron scattering from montmorillonite-type clay dispersions and polymer-clay nanocomposites. The model is shown to be able to describe well the data from a series of dilute montmorillonite in water dispersions in which the deuterium content of the water phase is varied. The fits combined with information from other techniques suggest strongly that H-D exchange occurs in the montmorillonite-water dispersions. Deviations from Q−2 behaviour often observed experimentally for clay dispersions are convincingly explained by the presence of a small proportion of tactoids. |
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Keywords: | Montmorillonite Nanocomposite Small angle neutron scattering |
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