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

Excess molar enthalpies, H-m(E), of binary mixtures containing (S)-(-)-limo nene + alpha -pinene, + beta -pinene, or + p-cymene were determined using a flow microcalorimeter in the range 288.15-313.15 K, and at atmospheric pre ssure. The H-m(E) are always positive, not exceeding 114 J mol(-1), and cur ves show a symmetrical trend. The temperature dependence of the calorimetri c 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 Prigogi ne. (C) 2001 Elsevier Science B.V. All rights reserved.