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(a) Optical images of hexadecane/H2O Pickering emulsions stabilized by PS@PSS with different concentrations after standing for 10 min; (b) Microscope images of hexadecane/H2O Pickering emulsion stabilized by PS@PSS with different concentrations. Here the ultrasonic power is 150 W, salt concentration is 0.1 mM, ultrasonic time is 3 min, and water:oil ratio is 1:1. The bar is 10 μm. (c) Droplets size distribution in number corresponding to microscope images.
