Excess molar enthalpies of binary mixtures containing pine resins in the range 288.15–313.15 K, and at atmospheric pressure: Use of the extended cell model of Prigogine

Abstract

Excess molar enthalpies, H m E, of binary mixtures containing ( S)-(−)-limonene+α-pinene, + β-pinene, or+ p-cymene were determined using a flow microcalorimeter in the range 288.15–313.15 K, and at atmospheric pressure. The H m E are always positive, not exceeding 114 J mol −1, and curves show a symmetrical trend. The temperature dependence of the calorimetric data is slight. Results were correlated to the Redlich–Kister polynomial and the adjustable parameters were determined by the least-squares method. Results were also interpreted by an extended modified cell model of Prigogine.