Surfactants tend to concentrate in the lamella at a gas-liquid interface. With the drainage of the lamella, the inner and outer interfaces come closer together, and the electrostatic repulsion caused by the ionic groups of the surfactant prevents further drainage, so foam stabilization occurs.
Electrostatic repulsion effect
6 января, 2016 
Pokraskin 
Опубликовано в рубрике Understanding. Coatings Raw Materials