Prediction and Correlation of Surfa ce Tensio n Data for Binary System at Vario s Tempe ratures: D MSO - L ong Chain alcohols

Surface tensions of binary mixtures of DMSO and a lon g chain series of aliphatic alcohols (۱-propanol, ۱-butanol, and ۱-hexanol) were measured as a function of composition using t he ring det achment me thod in the temperatu re range between (۲۸۸.۱۵ and ۳۲۸.۱۵) K. T he surface tension data is used to de scribe quantitatively the nature, properties, and compositio ns of surfac e layers in binary liquid mixtures. The modified UNIFA C model is employed for calculati on activity coefficients of surface an d bulk phases. Also, the surface tension has bee n predicted based on the Suarez method. Correlating the surface tension of the abo ve mentione d binary systems wa s performe d with em pirical an d thermodynamic base d models.T he composition of the interface of a binary mixture usually differs fro m that of t he bulk pha ses, and th e adsorption of one chemical sp cies at the interface c an lead to a substantial reduction in the surface tension of the system [۱-۳].

کلیدواژه ها:

Surface tension ، Pred iction ، UNIFAC ، Corre lation ، Binary mixture