Surface activity of acylglycerol emulsifiers modified with carboxylates

The interaction of monoacylglycerols and sodium or potassium carboxylates in modified acylglycerol emulsifiers was investigated to find the influence of the product composition on the interfacial tension in paraffin oil/water systems. The modification of surface activity of the emulsifiers was obtained by programming sodium or potassium soap content and hydrocarbon chain length, as well as the length of the acyl in the monoacylglycerol. It was stated that the increase of carboxylate concentration in the emulsifier causes a decrease of the C.M.C. in the case of sodium and potassium soaps. The C.M.C. values of monoacylglycerols with sodium carboxylates are higher than for potassium salts. The effectiveness of interfacial tension reduction of the synthesised products was investigated.