Influence of Inorganic Salt Additives on the Surface Tension of Sodium Dodecylbenzene Sulfonate Solution

In order to study the effect of inorganic salt additives on surface tension a sodium dodecylbenzene sulfonate (SDBS) solution, mixed system six common additives, NaCl, CaCl2, AlCl3, Na2SO4, Na2CO3, and NaHCO3, SDBS was measured, effects types, surfactant concentrations solution were studied. On this basis, three salts, CaCl2 selected, their critical micelle concentration (CMC) The experimental results showed that different salts had solution. > NaCl Na2SO4 NaHCO3 Na2CO3 AlCl3; when mass fraction is high, influence relatively small; with an increase in preferred decreases first, then tends be stable, increases; reduction by selected shows trend 0.7% 0.5% Na2SO4.