Abstract
Excess molar volumes of binary mixtures of 1,2,3,4-tetrahydronaphthalene (tetralin) with benzene, toluene, ethylbenzene, n-propylbenzene, iso-propylbenzene, n-butylbenzene, tert-butylbenzene, and sec-butylbenzene over the whole mole fraction range were measured with a continuous dilution dilatometer. All the experimental values, except that of benzene system, are negative. Flory theory and its extended form, the two-parameter method, were used to describe the volumetric properties. Theoretical prediction of volumetric properties is discussed in terms of the efficiency of the segmental contact sites. It is concluded that the two-parameter method can improve greatly the theoretical results.
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