By a News Reporter-Staff News Editor at Journal of Technology -- Researchers detail new data in Interface Science. According to news reporting out of Brisbane, Australia, by VerticalNews editors, research stated, "An Arizona SAz-2 calcium montmorillonite was modified by a typical dialkyl cationic surfactant (didodecyldimethylammonium bromide, abbreviated to DDDMA) through direct ion exchange. The obtained organoclays were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), high-resolution thermogravimetric analysis (HR-TG), and infrared emission spectroscopy (IES)."
Our news journalists obtained a quote from the research from the Queensland University of Technology, "The intercalation of surfactants greatly increased the basal spacing of the interlayers and the conformation arrangement of the loaded surfactant were assessed based on the XRD and TEM measurements. This work shows that the dialkyl surfactant can be directly intercalated into the montmorillonite without first undergoing Na+ exchange. Moreover, the thermal stability of organoclays and the different arrangements of the surfactant molecules intercalated in the SAz-2 Ca-montmorillonite were determined by a combination of TG and IES techniques. The detailed conformational ordering of different intercalated surfactants under different conditions was also studied. The surfactant molecule DDDMA has proved to be thermally stable even at 400 degrees C which indicates that the prepared organoclay is stable to significantly high temperatures. This study offers new insights into the structure and thermal stabilities of SAz-2 Ca-montmorillonite modified with DDDMA."
According to the news editors, the research concluded: "The experimental results also confirm the potential applications of organic SAz-2 Ca-montmorillonites as adsorbents and polymer-clay nanocomposites."
For more information on this research see: XRD, TEM, and thermal analysis of Arizona Ca-montmorillonites modified with didodecyldimethylammonium bromide. Journal of Colloid and Interface Science, 2013;408():75-81. Journal of Colloid and Interface Science can be contacted at: Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. (Elsevier - www.elsevier.com; Journal of Colloid and Interface Science - www.elsevier.com/wps/product/cws_home/622861)
Our news journalists report that additional information may be obtained by contacting Z.M. Sun, Queensland University of Technology, Fac Sci & Engn, Nanotechnol & Mol Sci Discipline, Brisbane, Qld 4001, Australia. Additional authors for this research include Y. Park, S.L. Zheng, G.A. Ayoko and R.L. Frost.
Keywords for this news article include: Brisbane, Interface Science, Australia and New Zealand
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