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The application of a capillary extrusion rheometer to the determination of the flow characteristics of lard
Author(s) -
Scherr H. J.,
Witnauer L. P.
Publication year - 1967
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02635613
Subject(s) - rheometer , rheology , extrusion , capillary action , shearing (physics) , materials science , flow (mathematics) , mechanics , engineering drawing , composite material , engineering , physics
A capillary extrusion rheometer was designed, and techniques were developed to obtain basic information on the flow behavior of lard. Since constant and adjustable shearing rates are a necessary feature for the study of the basic rheological behavior of a material, the rheometer was designed for use in conjunction with a tensile tester having a wide selection of crosshead rates. Techniques were developed for accurately measuring the flow variables and for treating the data. A comparison study on a Newtonian liquid sample proved the validity of the approach. Lard at 23.4C was tested, and its flow parameters (fluid‐consistency index and flow‐behavior index or degree of non‐Newtonian behavior) were obtained.