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

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).