Title :
Application of the Bleustein-Gulyaev wave method for investigation of high-pressure phase transitions in diacylglycerol oil
Author :
Kielczynski, Piotr ; Szalewski, Marek ; Balcerzak, Andrzej ; Malanowski, A. ; Rostocki, Aleksander J.
Author_Institution :
Inst. of Fundamental Technol. Res., Warsaw, Poland
Abstract :
Phase transitions in diacylglycerol (DAG) oil were investigated by using an ultrasonic method for measuring viscosity. Viscosity of DAG oil was measured over a wide range of hydrostatic pressures up to 500 MPa, and at temperatures ranging from 10 to 40 °C. The observed discontinuities in the viscosity versus pressure curves (isotherms) indicate phase transitions. An original ultrasonic method that uses the surface acoustic Bleustein-Gulyaev (B-G) wave was employed to measure the viscosity of DAG oil at high pressure range. This method allowed for fast and reliable measurement of DAG oil viscosity along various isotherms. Moreover, the kinetics of the observed phase transformations at various temperatures was analyzed.
Keywords :
high-pressure effects; liquid-liquid transformations; oils; organic compounds; ultrasonic waves; viscosity; DAG oil; diacylglycerol oil; high-pressure phase transition; surface Bleustein-Gulyaev wave method; ultrasonic method; viscosity; Acoustic measurements; Acoustics; Liquids; Pressure measurement; Temperature measurement; Ultrasonic variables measurement; Viscosity; Bleustein-Gulyaev waves; Viscosity; high pressure; phase transitions;
Conference_Titel :
Ultrasonics Symposium (IUS), 2012 IEEE International
Conference_Location :
Dresden
Print_ISBN :
978-1-4673-4561-3
DOI :
10.1109/ULTSYM.2012.0127
