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Surface viscosity measurements by an improved rotational‐torsion method
Author(s) -
MooYoung M.,
Vocadlo J. J.,
Charles M. E.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500419
Subject(s) - viscometer , torsion (gastropod) , viscosity , materials science , rotational speed , aqueous solution , polymer , mechanics , composite material , chemistry , classical mechanics , physics , medicine , surgery
A new double‐ring rotational‐torsional surface viscometer is described. It is shown that this represents an improvement of the conventional single‐ring device since secondary flow effects on viscosity measurements can be minimized or eliminated. Experimental results for some aqueous polymer solutions show that these effects can be substantial.