Water solution and its surface tension dependence on the structure of molecules in the surface-active substances and on the composition of adsorption layers

Surface activity depends on the structure of hydrophobic and hydrophilic parts of the surfactant molecules. The study describes the properties of aqueous solutions, specifically complex surfactants. Surfactant mixtures have synergetic feature of reducing surface tension. Surfactant solutions with the similar structure of molecules, especially their polar parts, have additive properties or, sometimes, antagonism. Surfactant solutions with the greatest difference in the structure of molecules show synergetic effect.