Diyala Journal For Pure Science
Scientific Refereed Journal Published By College of Science - University of Diyala
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Diyala Journal For Pure Sciences DJPS
ISRA Impact Factor:3.715
P- ISSN:2222-8373, E-ISSN:2518-9255
Volume 14, Issue 2 , April . 2018
Studying the Relationship between Gradient Energy Coefficient with Occupied Site Fraction, Temperature, Density and Surface Tension for Liquid Cyclohexane
Saygın Muhamad Nuri , Shanay Rajab Hasan
Year: 2018, Volume: 14, Issue: 2
Pages: 187-202 , DOI: http://dx.doi.org/10.24237/djps.1402.403B
The Gradient energy coefficient ( ) in polymers and oligomers (a few segments) play an important role in polymer blending, wetting, coating, adhesion process, foaming and a comprehensive role in the description as well as understanding of many processes especially in innovation of new polymer with classification of materials. As a result, the main reason in this study appear which has how the gradient energy coefficient changes from bulk to surface, has been establishing the new equation that helped us to extract the correlation between gradient energy coefficient and different parameters. The gradient energy coefficient has been related with hole fractions, temperature and density. The relationships between the above-mentioned parameters are then drawn according to our model. Both Simha-Somcynsky (SS) and Cahn-Hilliard (CH) models are employed together to calculate the thermodynamic properties of cyclohexane, namely, the hole fraction in temperature range at 313-473 K various presures up to 150 Mpa. Our values for the average and maximum percentage deviation of the specific volume of cyclohexane are calculated as 0.0196% and 0.0678% respectively
Keywords: lattice hole theory, Chan-Hilliard, gradien energy coefficient, Simha-Somcynsky, and surface tension.