Density and Acoustic Properties of Binary Liquid Mixtures of Ethyl Acetoacetate (Eaa) With 1- Alkanols (C3-C6) at Temperature 303.15K

Jyostna, T. Savitha; Ramesh, G.; Sreenu, D.; Satheesh, B.

doi:10.31788/rjc.2018.1132041

Cited by 1 publication

(2 citation statements)

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“…Overtime, researchers have shown great interest in the study of the thermodynamic properties of liquids and liquid mixtures for better understanding of the nature and strength of interactions between molecules of mixed solvents [1][2][3][4][5]. The effects of these interactions manifest in the excess properties of the mixed system.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic properties of binary mixtures of methyl acetate and some selected ketonesat varying compositions and temperatures

Cookey,

Maduelosi,

Udo

2023

Recent Adv. Nat. Sci

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Density and viscosity measurements of binary mixtures of methyl acetate with propanone, butan-2-one and pentan-2-one were carried out at varying compositions (0 to 1) of methyl acetate and temperatures of 25, 30, 35 and 40◦C. The experimental data obtained were correlated with the Redlich-Kister polynomial equation from where excess molar volumes (VE ), excess viscosities (ηE), excess Gibbs free energies of activation for viscous flow (ΔG*E ), fitting coefficients and standard deviations of the mixtures were calculated. The ηE values were positive for mixtures of butan-2-one and pentan-2-one at all compositions and temperatures but gradually decrease with increasing composition and temperature. The mixtures of methyl acetate with propanone showed negative values of excess viscosity at all compositions of methyl acetate. The negative values are observed to be directly proportional to temperature. The values of VE for mixtures of methyl acetate + propanone system display positive deviations at lower compositions (0-0.4) and negative for higher mole fractions. The excess molar volumes of mixtures of butan-2-one and pentan-2-one are negative at the studied compositions and temperatures with a minimum at 0.3 composition and subsequent gradual decrease in negativity with increasing composition. The excess Gibbs free energy of activation for viscous flow (ΔG*E ) are positive at all compositions and temperatures and reaches a maximum at 0.3 composition above which it decreases. These results have been interpreted on the basis of the type and nature of interactions as well as differences in molecular architecture between the solvent mixtures.

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Section: Introductionmentioning

confidence: 99%

“…Esters are good solvents for polymers as well as plasticizing agents. The unique aroma of esters also makes them very useful in food and cosmetic industries [1,7].…”

Section: Introductionmentioning

confidence: 99%