Foaming behavior of aqueous solutions of a zwitterionic surfactant in the presence of salts analysis of specific ion effect and synergism

Abstract

Zwitterionic surfactants have the unique property of bearing hydrophilic head groups having both positive and negative charges Aqueous foams are the dispersion of gas bubbles in water containing stabilizing surface active species such as surfactants and particles Surfactants constitute the primary materials required in almost all the foaming processes The presence of salts in the surfactant solution influence the foam stability in various ways Salts in the surfactant solution can compress t