Molar excess volumes of four nonane isomers mixed with n-nonane and n-hexadecane were obtained from precise density measurements over the complete mole fraction range at 25°C. Good agreement was found between the experimental molar excess volumes and those predicted by the Flory theory. This work shows the importance of the three contributions to V m e , the heat of mixing X12, the differences in free volume, and the P* effect.
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Awwad, A.M., Allos, E.I. Volumes of mixing and the isomeric effect. Part I. Nonane Isomers withn-nonane andn-hexadecane. J Solution Chem 16, 465–474 (1987). https://doi.org/10.1007/BF00648596
- excess volume
- nonane isomers
- isormeric effect