Densities, Molar Volumes, Thermal Expansion Coefficients, and Isothermal Compressibilities of Organic Acids from 293.15 K to 323.15 K and at Pressures up to 25 MPa

1997 ◽  
Vol 42 (6) ◽  
pp. 1116-1120 ◽  
Author(s):  
Wai-Ting Vong ◽  
Fuan-Nan Tsai
Keyword(s):  
Thermal Expansion ◽  
Organic Acids ◽  
Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

Partial Molar Volumes and Thermal Expansion Coefficients as an Explanation for Co-Solvent Effect of Penetrants in Multicomponent Polymer Mixtures

2015 ◽  
Vol 216 (21) ◽  
pp. 2129-2140 ◽  
Author(s):  
Muhammad Ahsan Bashir ◽  
Vincent Monteil ◽  
Vasileios Kanellopoulos ◽  
Mohammad Al-Haj Ali ◽  
Timothy McKenna
Keyword(s):  
Thermal Expansion ◽  
Solvent Effect ◽  
Partial Molar Volumes ◽  
Polymer Mixtures ◽  
Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Multicomponent Polymer

scholarly journals Densities, Apparent Molar Volume, Expansivities, Hepler’s Constant, and Isobaric Thermal Expansion Coefficients of the Binary Mixtures of Piperazine with Water, Methanol, and Acetone at T = 293.15 to 328.15 K

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Qazi Mohammed Omar ◽  
Jean-Noël Jaubert ◽  
Javeed A. Awan
Keyword(s):  
Thermal Expansion ◽  
Molar Volume ◽  
Binary Mixtures ◽  
Apparent Molar Volume ◽  
Apparent Molar Volumes ◽  
Molar Volumes ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Isobaric Thermal Expansion ◽  
Expansion Coefficients

The properties of 3 binary mixtures containing piperazine were investigated in this work. In a first step, the densities for the two binary mixtures (piperazine + methanol) and (piperazine + acetone) were measured in the temperature range of 293.15 to 328.15 K and 293.15 to 323.15 K, respectively, at atmospheric pressure by using a Rudolph research analytical density meter (DDM 2911). The concentration of piperazine in the (piperazine + methanol) mixture was varied from 0.6978 to 14.007 mol/kg, and the concentration of piperazine in the (piperazine + acetone) mixture was varied from 0.3478 to 1.8834 mol/kg. On the other hand, the density data for the (piperazine + water) mixture were taken from the literature in the temperature range of 298.15 to 328.15 K. In a second step, for the 3 investigated systems, the apparent molar volume (Vϕ) and the limiting apparent molar volume (Vϕ0) at infinite dilution were calculated using the Redlich–Mayer equation. The limiting apparent molar volumes (Vϕ0) were used to study the influence of the solute-solvent and solute-solute interactions. The temperature dependency of the apparent molar volumes was used to estimate the apparent molar expansibility, Hepler’s constant ∂2Vϕ0/∂T2P, and isobaric thermal expansion coefficients αP.

scholarly journals Derived thermodynamic properties of alcohol + cyclohexylamine mixtures

2010 ◽  
Vol 75 (2) ◽  
pp. 283-293 ◽  
Author(s):  
Ivona Radovic ◽  
Mirjana Kijevcanin ◽  
Aleksandar Tasic ◽  
Bojan Djordjevic ◽  
Slobodan Serbanovic
Keyword(s):  
Thermal Expansion ◽  
Infinite Dilution ◽  
Binary Systems ◽  
Excess Molar Volumes ◽  
Partial Molar Volumes ◽  
Hydroxyl Group ◽  
Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Partial Excess Molar Volumes

Thermal expansion coefficients, ?, excess thermal expansion coefficients, ?E, isothermal coefficients of pressure excess molar enthalpy, (?HE/?p)T,x, partial molar volumes, V?i, partial molar volumes at infinite dilution, V?i?, partial excess molar volumes, V?Ei, and partial excess molar volumes at infinite dilution, V?Ei?, were calculated using experimental densities and excess molar volumes, VE, data. All calculations are performed for the binary systems of cyclohexylamine with 1-propanol or 1-butanol or 2-butanol or 2-methyl-2-propanol. The Redlich-Kister polynomial and the reduced excess molar volume approach were used in the evaluation of these properties. In addition, the aim of this investigation was to provide a set of various volumetric data in order to asses the influence of temperature, chain length and position of hydroxyl group in the alcohol molecule on the molecular interactions in the examined binary mixtures.

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