An-Najah University Journal for Research - A (Natural Sciences)

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An-Najah University Journal for Research - A (Natural Sciences) Indexed in Scopus since 2019
CiteScore 0.8
Indexed since 2019
First decision 5 Days
Submission to acceptance 160 Days
Acceptance to publication 20 Days
Acceptance rate 14%

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Original full research article

Concentration and Temperature Dependence of Shear Viscosity of the Critical Mixture of Nitroethane and 3-Methylpentane

Published
2002-05-07
Pages
117 - 124
Full text

Abstract

Shear viscosity coefficients of nitroethane and 3-methylpentane mixture have been measured using digital viscometer. The measured values were over the entire concentration range above the critical temperature (Tc = 299.590 K) in the range 0.040 ? T- Tc ? 18.570 K. The results above the critical temperature Tc were analyzed by the mode coupling theory. The anomaly of shear viscosity was detected as a function of temperature and concentration. A least square fit near the critical temperature yields a value of noncritical part of shear viscosity ?0 = 0.358 cP. The Debye momentum cutoff qD and the constant A in the mode coupling approach were determined. Our values of ?0 and A are in good agreement with the literature values.

Article history

Received
2000-06-13
Accepted
2002-05-07
Available online
2002-05-07
بحث أصيل كامل

لزوجة الخليط نيترويثين و3- ميثيلبنتين واعتماده على درجة الحرارة والتركيز

Published
2002-05-07
الصفحات
117 - 124
البحث كاملا

الملخص

لقد تم دراسة اللزوجة واعتمادها على درجات الحرارة للخليط الثنائي نيترويثين – 3 – ميثيلبنتين في حالة التركيز الحرج وفوق درجة الحرارة الحرجة للخليط. وقد استخدمت نظرية الازدواج في تحليل النتائج، وأظهرت الدراسة ظاهرة غير عادية للزوجة نتيجة اعتمادها على درجات الحرارة وتركيز الخليط. وأظهرت النتائج توافق كبير بين النتائج العملية والنظرية

Article history

تاريخ التسليم
2000-06-13
تاريخ القبول
2002-05-07
Available online
2002-05-07