(377c) Modeling of Excess Molar Volumes for Binary Mixtures Containing {2-(dimethylamino)Ethyl Methacrylate + Alcohol} at T = (293.15 – 313.15) K and Atmospheric Pressure

Muche, D. N. F., University of California, Davis
Excess properties have been a qualitative and quantitative way to predict the deviation from ideality of binary liquid solutions. Furthermore, these properties have been used in the development and testing of models and new theories of solutions. The current work is a continuation of an experimental and modeling study of excess molar properties of binary liquid systems [1-3], which objective consisted in experimental determination of densities of binary liquid solutions of mixtures containing {2-(dimethylamino)ethyl methacrylate (DMAEMA) + alcohols (methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol)} in all composition range, at different temperature T = (293.15 – 313.15) K and atmospheric pressure. The density measurements were accomplished by using a mechanical oscillation densimeter (DMA 4500 Model) manufactured by Anton Paar. The densities of pure components and respective solutions allowed to calculate indirectly the excess molar volume of the studied systems, which was correlated by using a Redlich-Kister polynomial. The excess molar volume data were also used to test the applicability of Prigogine-Flory-Patterson Theory (PFP Theory) and Extended Real Associated Solution Model (ERAS Model). The thermodynamic results suggest that structural and chemical effects must outweigh physical effects.


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