Theory 29/Solvation & interfaces/Emulsions
Emulsion Stability Is Film Against Shear
The claim
Emulsion stability is set by the ratio of interfacial film strength to applied shear, so the same emulsion separates in one process and not another.
01Mechanism
Droplets coalesce when the film ruptures; shear both promotes collision and can strip the film.
02Prediction
Stability should track the ratio.
03Refutation
Stability tracking surfactant concentration would remove shear.