Morphological and Microstructural Characterization of Organoclays from Low Smectite Containing Clays Materials
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Date
2017-02-03
Authors
Journal Title
Journal ISSN
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Publisher
Chemical Science International Journal
Abstract
Two low smectite-containing clay materials were modified, using hexadecyltrimethylammonium
bromide (HDTMAB) as intercalating agents, under very mild experimental conditions, to investigate
their potentials as suitable organoclays for industrial and environmental applications. Changes in
the general morphological and microstructural characteristics were studied by X-Ray Diffraction
(XRD) analysis, Thermogravimetric Analysis (TGA), Brauner Emmet Taylor (BET) Analysis, Fourier
Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy (SEM) before and after
modification. The shift in XRD reflections after intercalation indicated that the HDTMA chains adopt
monolayer and bilayer arrangements within the clay interlayers and were largely dependent on the
reaction time and surfactant loading. This resulted in decreased specific surface area and
increased pore sizes in the organoclay samples.
Description
Emeka Thompson Nwankwere. Department of Physical Sciences, Kampala International University, Uganda.
Keywords
Clays, HDTMAB, Interlayers, Organoclays, Intercalation, Smectites