Abstract

A new liquid binary cyclohexane - phenol mixture was prepared. The dynamic shear viscosity coefficients of this liquid mixture, for different phenol concentrations and temperatures, were investigated by capillary viscometer made from glass. The dynamic shear viscosity showed an anomaly close to the critical temperature Tc = 17.0 ℃ . The anomaly behavior was observed at critical weight concentration of phenol, xc = 2.70 % . At temperatures above critical one, the experimental data were fitted using mode Coupling Theory. It was found that the dynamic shear viscosity non-critical background had a value of  η0  = 0.8174 cP. Also, using a pycnometer of 10 ml, density measurements were performed. The expected law for mass density above critical temperature was the power law. The noncritical mass density part was found to have a value of ρ0= 0.7357 gmcm3.  In addition, The isobaric thermal expansion coefficient at critical temperature (αpc) was also deduced and found to have a value of  2.07×10-6 ℃-1 . Finally, the derivative of critical temperature with respect to pressure (Tc')  was found to have a value 1.22×10-4 K Pa.

العنوان

Iyad Saadeddin

الناشر

An-Najah National University

بلد الناشر

فلسطين

نوع المنشور

مطبوع فقط

المجلد

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السنة

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الصفحات

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