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We report a successful method of sterically stabilising small, high aspect ratio clay platelets in a liquid crystalline host using a quaternary ammonium surfactant. Small Angle X-ray Scattering results for the dry powder 2HT-treated Laponite show that there is a monolayer of 2HT on the platelet surface. The data for the Laponite suspension in 5CB indicate free tumbling disks which do not aggregate in the nematic phase.
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Pizzey et al. (2004) studied this question.
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