A thermoanalytical assessment of an organoclay |
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| Authors: | Yuri Park Godwin A Ayoko Janos Kristof Erzsébet Horváth Ray L Frost |
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| Institution: | 1.Chemistry Discipline, Faculty of Science and Technology,Queensland University of Technology,Brisbane,Australia;2.Department of Analytical Chemistry,University of Veszprem,Veszprem,Hungry;3.Instutite of Environmental Engineering, University of Pannonia,Veszprém,Hungary |
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| Abstract: | High resolution thermogravimetric analysis (TG) has attracted much attention in the synthesis of organoclays and its applications.
In this study, organoclays were synthesised through ion exchange of a single cationic surfactant for sodium ions, and characterised
by methods including X-ray diffraction (XRD) and TG. The changes of surface properties in montmorillonite (MMT) and organoclays
intercalated with surfactant were determined using XRD through the changes in the basal spacing. The TG was applied in this
study to investigate more information of the configuration and structural changes in the organoclays with thermal decomposition.
There are four different decompositions steps in differential thermogravimetric curves. The obtained TG steps are relevant
to the arrangement of the surfactant molecules intercalated in MMT and the thermal analysis indicates the thermal stability
of surfactant modified clays. This investigation provides new insights into the properties of organoclays and is important
in the synthesis and processing of organoclays for environmental applications. |
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