کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
230241 1427376 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use and limitations of a quartz crystal microbalance to measure viscosity of carbon dioxide-expanded fish oil fatty acid ethyl esters
ترجمه فارسی عنوان
استفاده و محدودیت های میکروبازار کریستال کوارتز برای اندازه گیری ویسکوزیته اتیل استرهای اسید چرب روغن ماهی گسترش یافته با کربن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Quartz crystal microbalance (QCM) was calibrated for viscosity determination.
• Viscosity of fish oil fatty acid ethyl esters (FAEE) in equilibrium with CO2 was tested.
• Viscosity of CO2-expanded (CX) ethanol was also tested with QCM.
• Viscosity results for CX-FAEE and CX-ethanol were lower than literature data.
• QCM is not suitable for CX liquids because no slip condition is not satisfied.

The use of a quartz crystal microbalance (QCM) to determine the viscosity of CO2-expanded (CX) liquids was evaluated. This study presents a calibration method for QCM to be used for viscosity measurements at elevated hydrostatic pressures, taking into account the effects of hydrostatic pressure and surrounding fluid density on the resonant frequency of the QCM in an effort to isolate the effect of viscosity. The viscosity values obtained for CX fatty acid ethyl esters and CX ethanol with increasing pressure using the QCM were lower compared to literature data, indicating that the no-slip boundary condition between the QCM surface and the CX liquid was compromised. Thus, a QCM was found not to be suitable for measuring viscosity of CX liquids but could be used to determine the viscosities of gas-free liquids at ambient and elevated pressures.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 101, June 2015, Pages 104–109
نویسندگان
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