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Pickering Emulsion Stability under Cooling near the Consolute Point of Water - Lutidine Mixture

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Version 2 2023-12-12, 05:48
Version 1 2023-11-30, 02:10
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posted on 2023-12-12, 05:48 authored by Hiroki Matsubara, Junya Doi

Near the critical solution point, the interfacial tension   between the coexisting two liquids exponentialy decrease upon cooling. This reduced the adsorption energy of silica particle at the liquid-liquid interface and resulted in the desoption of the particles to the aqueous phase (Pickering emulsion demulsification).
Video 1: Change in Silica Stabilized Pickering emulsion near the Lower Critical Solution Temperature of 2,6-Lutidine - Water Mixtures under cooling  (Cooling rate is 0.5 °C / min).

Funding

Physical property control of pickering emulsion by applying critical dissolution and wetting with a solvent of silica particles

Japan Society for the Promotion of Science

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KOSÉ Cosmetology Research Foundation

Iketani Science and Technology Foundation

History

Corresponding author email address

hmtbr@hiroshima-u.ac.jp

Copyright

© 2023 Japan Oil Chemists’ Society

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