Advantages and limitations of the synchrotron based transmission X-ray microscopy in the study of the clay aggregate structure in aqueous suspensions
Frost, Ray L., Zbik, Marek S., & Song, Yen-Fang (2008) Advantages and limitations of the synchrotron based transmission X-ray microscopy in the study of the clay aggregate structure in aqueous suspensions. Journal of Colloid and Interface Science, 319(1), pp. 169-174.
This paper reports new application of new Transmission X-ray Microscopy powered by a synchrotron source for the study of aqueous based clay suspensions. This paper delineates the advantages and limitations of this method. The tested Transmission X-ray Microscopy (TX-rM) technique has shown good agreement with the cryo-stage SEM technique. The theoretical resolution limit of the TXM technique is 60 nm and clay particles with diameter below 500 nm are clearly visible and their pseudohexagonal symmetry is recognizable in detail. It is clearly demonstrated the methodology of implementing TX-rM to study aqueous based clay suspensions that are close to ~60 nm tomographic resolution. The technique enables us to study discrete structure of clay suspensions in water and within aggregates. This has never been previously possible. Larger crystals, more compact aggregates and less colloidal fraction present in kaolinite from Georgia has impact on faster settling and gelling in denser suspension than for Birdwood kaolinite in which colloidal particles create gel-like networking in less dense aqueous suspension.
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|Item Type:||Journal Article|
|Additional Information:||This is very innovative research and is right at the spear point of physical chemistry.|
|Keywords:||Keywords, transmission X, ray microscopy (TX, rM), scanning electron microscopy (SEM), synchrotron radiation, kaolinite, minerals, interface segregation|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2008 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||23 Jan 2008|
|Last Modified:||29 Feb 2012 13:48|
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