CORRELATION BETWEEN TOPOLOGICAL FEATURES AND SURFACE-TENSION OF BINARY-LIQUID MIXTURES

The excess surface tension of a large number of binary liquid mixtures has been correlated with their topological features quantified in terms of the molecular connectivity indices. The agreement between the calculated and experimental σE values is reasonably well for all the mixtures. A simple correlation has also been proposed between σE and molar excess volume (VE) of a binary mixture. The correlation is quite useful in correlating σE data even for the mixtures where either one or both the components are associated in the pure state and/or there is interaction between them. © 1990 Springer-Verlag.