Dynamics of Kaolinite-Urea Nanocomposites via Coupled DMSO-Hydroxyaluminum Oligomeric Intermediates

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dc.contributor.authorIbahati, Sempeho S.
dc.contributor.authorKim, Hee T.
dc.contributor.authorMubofu, Egid B.
dc.contributor.authorPogrebnoi, Alexander
dc.contributor.authorShao, Godlisten N.
dc.contributor.authorHilonga, Askwar
dc.date.accessioned2016-06-15T20:55:37Z
dc.date.available2016-06-15T20:55:37Z
dc.date.issued2015
dc.description.abstractKaolinite-urea nanocomposites were prepared via intercalation reactions in an attempt to investigate the dynamic nature of kaolinite morphology for advanced applications in controlled release systems (CRS). Characterization was done using SEM-EDX, XRF, ATR-FTIR, XRD, and DT/DTG; Andreasen pipette sedimentation technique was used to determine the grain size distribution of the raw kaolinite. The X-ray diffraction pattern revealed the existence of an FCC Bravais lattice where the intercalation ratios attained were 51.2%, 32.4%, 7.0%, and 38.4% for hydroxyaluminum oligomeric intercalated kaolinite, substituted urea intercalated kaolinite, calcined DMSO intercalated kaolinite, and hydroxyaluminum reintercalated kaolinite, respectively, along with their respective crystallite sizes of 33.51–31.73 nm, 41.92–39.69 nm, 22.31–21.13 nm, and 41.86–39.63 nm. The outcomes demonstrated that the employed intercalation routes require improvements as the intercalation reactions were in average only ≈32.3%. The observations unveiled that it is possible to manipulate kaolinite structure into various morphologies including dense-tightly packed overlapping euhedral pseudo hexagonal platelets, stacked vermiform morphologies, postulated forms, and unique patterns exhibiting self-assembled curled glomeruli-like morphologies. Such a diversity of kaolinite morphologies expedites its advanced applications in the controlled release systems (CRS) such as drug delivery systems and controlled release fertilizers (CRFs).en_US
dc.identifier.citationSempeho, S.I., Kim, H.T., Mubofu, E., Pogrebnoi, A., Shao, G. and Hilonga, A., 2015. Dynamics of Kaolinite-Urea Nanocomposites via Coupled DMSO-Hydroxyaluminum Oligomeric Intermediates. Indian Journal of Materials Science, 2015.en_US
dc.identifier.doi10.1155/2015/920835
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2501
dc.language.isoenen_US
dc.publisherHindawi Publishing Corporationen_US
dc.titleDynamics of Kaolinite-Urea Nanocomposites via Coupled DMSO-Hydroxyaluminum Oligomeric Intermediatesen_US
dc.typeJournal Article, Peer Revieweden_US
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