TO THE EXPERIMENTAL INVESTIGATION AND PRE CALCULATION OF SURFACE TENSIONS OF TERNARY-SYSTEMS

It was made a study to precalculate surface tensions of ternary system s. In the literature, there are given a number of relations for calcul ating surface tensions of binary systems. However, only a few of them are suitable to predict surface tensions of ternary or multicomponent mixtures. In this paper it was proved the best method for the precalcu lation of surface tensions using available data from literature and ow n measurements. Such, the surface tensions of the ternary system n-pro panol(1)/ethylene glycol(2)/water(3) were measured over a wide concent ration range at 25 degrees C by means of the K12 processor tensiometer developed by Kruss GmbH Hamburg/Germany. Using the recently published equation given by Zhaolin and Zhongxiu in 1995 the best agreement bet ween measured and calculated surface tension of a ternary mixture was obtained.