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Abstrato
Micelle-Like Microaggregate Morphology in Framework of Gelled Montmorillonite
Żbik MS, William DJ and Trzciński JT
Particle space arrangement within three-dimensional (3D) structured networks in clay suspension may prevent clay particles and aggregates from settling under gravity force and encapsulate water within such a network which results in stabilize gel formation.
To better understand this phenomenon, a microstructural investigation was conducted on Wyoming montmorillonite clay suspension gelled by aluminium chlorohydrate in water. Gel morphology was studied with the aid of a synchrotron-powered transmission x-ray microscope (TXM) and cryogenic scanning electron microscope (Cryo-SEM).
A new type of globular micro-morphology and the particle space arrangement was observed. For the first time, globular micro-aggregate morphology was found where flexible smectite flakes were curled and build globular aggregates. These aggregates were observed to assembly multilayer, micella like globular superstructure. This new smectite gel micro-morphology may be similar to earlier described pseudoglobular microstructural model observed in eluvial and hydrothermal clay deposits.