Enthalpy and entropy of fusion and the equilibrium melting point of polyethylene oxide

1972 ◽  
Vol 68 ◽  
pp. 656 ◽  
Author(s):  
A. M. Afifi-Effat ◽  
J. N. Hay
Keyword(s):  
Melting Point ◽  
Polyethylene Oxide ◽  
Entropy Of Fusion ◽  
Equilibrium Melting Point ◽  
Enthalpy And Entropy

Equilibrium melting point of polyethylene oxide

1980 ◽  
Vol 22 (11) ◽  
pp. 2647-2654 ◽  
Author(s):  
O.V. Romankevich ◽  
S.Ya. Frenkel
Keyword(s):  
Melting Point ◽  
Polyethylene Oxide ◽  
Equilibrium Melting Point

Molecular Dynamics Simulations on Melting of Aluminum

2013 ◽  
Vol 423-426 ◽  
pp. 935-938 ◽  
Author(s):  
Ji Feng Li ◽  
Xiao Ping Zhao ◽  
Jian Liu
Keyword(s):  
Molecular Dynamics ◽  
Melting Point ◽  
Molecular Dynamics Simulations ◽  
High Pressures ◽  
Ambient Pressure ◽  
Initial Porosity ◽  
Equilibrium Melting Point ◽  
Porosity Effect ◽  
Dynamics Simulations ◽  
Experimental Melting Point

Molecular dynamics simulations were performed to calculate the melting points of perfect crystalline aluminum to high pressures. Under ambientpressure, there exhibits about 20% superheating before melting compared to the experimental melting point. Under high pressures, thecalculated melting temperature increases with the pressure but at a decreasing rate, which agrees well with the Simon's melting equation. Porosity effect was also studied for aluminum crystals with various initial porosity at ambient pressure, which shows that the equilibrium melting point decreases with the initial porosity as experiments expect.

Thermodynamic Studies on Melting Some α- and β-Derivatives of Naphthalene

1979 ◽  
Vol 32 (1) ◽  
pp. 49 ◽  
Author(s):  
SC Khetarpal ◽  
K Lal ◽  
HL Bhatnagar
Keyword(s):  
Melting Point ◽  
Volume Changes ◽  
Electrical Method ◽  
Entropy Of Fusion ◽  
Compressibility Coefficient ◽  
New Apparatus ◽  
Solid Compounds ◽  
Entrapped Air ◽  
Latent Heats ◽  
Derivatives Of

Methods for determining volume changes on melting have been briefly reviewed. A new apparatus has been described which is simple in operation, accurate in measurements and is free from some of the major limitations of the apparatuses used earlier. It has been used to determine volume changes on melting of α- and β-derivatives of naphthalene (C10H7X; X = NH2, OH, COOH), as well as coefficients of cubical expansion of the solid compounds (α) and their melts (α'). The application of the apparatus has been extended to determine the densities of the compounds at any temperature both when entrapped air is present (d) and when it is completely absent (d'). An electrical method using a modified glass calorimeter has been employed for the measurement of latent heats of fusion, ΔHf. From the experimentally determined values of ΔVf/Vs,d', α and ΔHf, the molar volume of the solid compound at the melting point (V8), that of the melt at the melting point (V1), the entropy of fusion (ΔSf), the variation of the melting temperature with pressure [(∂T/∂P)v] and the compressibility coefficient of the solid compounds (β) have been calculated and the results discussed.

4 Enthalpy and entropy of fusion

Spark ◽  
2019 ◽  
Author(s):  
Mohammad H. Keshavarz ◽  
Thomas M. Klapötke
Keyword(s):  
Entropy Of Fusion ◽  
Enthalpy And Entropy

A new micromethod for determining the equilibrium melting point curve

Cryobiology ◽  
1975 ◽  
Vol 12 (6) ◽  
pp. 583
Author(s):  
A.P. MacKenzie ◽  
D.H. Rasmussen
Keyword(s):  
Melting Point ◽  
Equilibrium Melting Point ◽  
Point Curve
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