Thermodynamics of binary systems using interaction parameters

1991 ◽  
Vol 22 (5) ◽  
pp. 593-605 ◽  
Author(s):  
J. P. Hajra ◽  
B. Mazumdar
Keyword(s):  
Binary Systems ◽  
Interaction Parameters

Viscosity of the binary systems 2-methyl-2-propanol with n-alkanes at T=(303.15, 308.15, 313.15, 318.15 and 323.15)K: Prediction and correlation – New UNIFAC–VISCO interaction parameters

2010 ◽  
Vol 299 (2) ◽  
pp. 191-197 ◽  
Author(s):  
Emila M. Živković ◽  
Mirjana Lj. Kijevčanin ◽  
Ivona R. Radović ◽  
Slobodan P. Šerbanović ◽  
Bojan D. Djordjević
Keyword(s):  
Binary Systems ◽  
Interaction Parameters

A new approach to study interaction parameters in cyanobiphenyl liquid crystal binary systems

2015 ◽  
Vol 80 ◽  
pp. 22-29 ◽  
Author(s):  
Soheila Javadian ◽  
Nima Dalir ◽  
Ali Ghanadzadeh Gilani ◽  
Jamal Kakemam ◽  
Ali Yousefi
Keyword(s):  
Liquid Crystal ◽  
Binary Systems ◽  
Interaction Parameters ◽  
New Approach

scholarly journals Water-Tree Resistability of UV-XLPE from Hydrophilicity of Auxiliary Crosslinkers

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4147
Author(s):  
Jun-Qi Chen ◽  
Xuan Wang ◽  
Wei-Feng Sun ◽  
Hong Zhao
Keyword(s):  
Molecular Simulation ◽  
Amorphous Phase ◽  
Viscoelastic Properties ◽  
Binary Systems ◽  
Interaction Parameters ◽  
Water Molecules ◽  
Stress Strain ◽  
Mixing Energy ◽  
Water Tree ◽  
Tree Resistance

The water-resistant characteristics of ultraviolet crosslinked polyethylene (UV-XLPE) are investigated specially for the dependence on the hydrophilicities of auxiliary crosslinkers, which is significant to develop high-voltage insulating cable materials. As auxiliary crosslinking agents of polyethylene, triallyl isocyanurate (TAIC), trimethylolpropane trimethacrylate (TMPTMA), and N,N′-m-phenylenedimaleimide (HAV2) are individually adopted to prepared XLPE materials with the UV-initiation crosslinking technique, for the study of water-tree resistance through the accelerating aging experiments with water blade electrode. The stress–strain characteristics and dynamic viscoelastic properties of UV-XLPE are tested by the electronic tension machine and dynamic thermomechanical analyzer. Monte Carlo molecular simulation is used to calculate the interaction parameters and mixing energy of crosslinker/water binary systems to analyze the compatibility between water and crosslinker molecules. Water-tree experiments verify that XLPE-TAIC represents the highest ability to inhibit the growth of water-trees, while XLPE-HAV2 shows the lowest resistance to water-trees. The stress–strain and viscoelastic properties show that the concentration of molecular chains connecting the adjacent lamellae in amorphous phase of XLPE-HAV2 is significantly higher than that of XLPE-TAIC and XLPE-TMPTMA. The molecular simulation results demonstrate that TAIC/water and TMPTMA/water binary systems possess a higher hydrophilicity than that of HAV2/water, as manifested by their lower interaction parameters and mixing free energies. The auxiliary crosslinkers can not only increase the molecular density of amorphous polyethylene between lamellae to inhibit water-tree growth, but also prevent water molecules at insulation defects from agglomerating into micro-water beads by increasing the hydrophilicity of auxiliary crosslinkers, which will evidently reduce the damage of micro-water beads on the amorphous phase in UV-XLPE. The better compatibility of TAIC and water molecules is the dominant reason accounting for the excellent water resistance of XLPE-TAIC.

Numerical Prediction of the Thermodynamic Properties of Ternary Al-Ni-Pd Alloys

2016 ◽  
Vol 35 (1) ◽  
pp. 37-45
Author(s):  
Maryana Zagula-Yavorska ◽  
Jolanta Romanowska ◽  
Sławomir Kotowski ◽  
Jan Sieniawski
Keyword(s):  
Thermodynamic Properties ◽  
Ternary System ◽  
Boundary Conditions ◽  
Mole Fraction ◽  
Thermodynamic Functions ◽  
Binary Systems ◽  
Interaction Parameters ◽  
Ternary Interaction ◽  
The Third ◽  
Gibbs Triangle

AbstractThermodynamic properties of ternary Al-Ni-Pd system, such as exGAlNPd, µAl(AlNiPd),µNi(AlNiPd) and µPd(AlNiPd) at 1,373 K, were predicted on the basis of thermodynamic properties of binary systems included in the investigated ternary system. The idea of predicting exGAlNiPd values was regarded as calculation of values of the exG function inside a certain area (a Gibbs triangle) unless all boundary conditions, that is values of exG on all legs of the triangle are known (exGAlNi, exGAlPd, exGNiPd). This approach is contrary to finding a function value outside a certain area, if the function value inside this area is known. exG and LAl,Ni,Pd ternary interaction parameters in the Muggianu extension of the Redlich–Kister formalism were calculated numerically using the Excel program and Solver. The accepted values of the third component xx differed from 0.01 to 0.1 mole fraction. Values of LAlNiPd parameters in the Redlich–Kister formula are different for different xx values, but values of thermodynamic functions: exGAlNiPd, µAl(AlNiPd), µNi(AlNiPd) and µPd(AlNiPd) do not differ significantly for different xx values. The choice of xx value does not influence the accuracy of calculations.

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