In depth analysis indicates that the defect size in particle shells determines the exact merging behaviors: when the defect size is larger than a critical size around the particle diameter, normal coalescence will show up while abnormal coalescence will appear for coatings with smaller defects. Such connecting-then-breaking cycles repeat multiple times, until a stable connection is established. Firstly, we summarize the effect of solid particles with different properties (such as wettability, size, shapes, roughness, and so on) on the fabrication of Pickering emulsions.

In the abnormal coalescence, however, the bridge fails to grow indefinitely instead it breaks up spontaneously due to the geometric constraint from particle shells. Native starch Pickering stabilizer without chemical modification has attracted research interest in food field. In this review, we summarize the recent progress of Pickering emulsion from controllable fabrication to biomedical applications. In the normal coalescence, a liquid bridge grows continuously and merges two droplets together, similar to the classical picture.

Under high enough electric field, the originally-stable droplets coalesce via two distinct approaches: normal coalescence and abnormal coalescence. Finally, the review puts forward future research trends of edible Pickering emulsions. View a PDF of the paper titled Coalescence of Pickering emulsion droplets induced by an electric field, by Guo Chen and 5 other authors View PDF Abstract:Combining high-speed photography with electric current measurement, we investigate the electrocoalescence of Pickering emulsion droplets. Meanwhile, we summarized applications of edible Pickering emulsions.

Pickering emulsion review