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RHEOLOGICAL MODELS FOR DISPERSIONS OF POLYOXYETHYLENE (4) LAURYL ETHER IN HYDROXYETHYL CELLULOSE
Author(s) -
HAÜGEN P.,
RUNIKIS J. O.,
TUNG M. A.
Publication year - 1972
Publication title -
journal of texture studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.593
H-Index - 54
eISSN - 1745-4603
pISSN - 0022-4901
DOI - 10.1111/j.1745-4603.1972.tb00627.x
Subject(s) - rheology , hydroxyethyl cellulose , pulmonary surfactant , ether , cellulose , materials science , dispersion (optics) , polymer , chemical engineering , shear rate , polymer chemistry , chemistry , chromatography , organic chemistry , composite material , physics , optics , engineering
Viscometric properties of polyoxyethylene (4) lauryl ether (Brij 30) in hydroxyethylcellulose (HEC) dispersions were evaluated over a concentration range of 2.0–3.5% HEC and 0–16% Brij 30. Three rheological models: the modified Shangraw structure equation, the Steiger‐Trippi‐Ory equation and the power‐law model were fitted to the data and found to describe accurately the flow behaviour of the dispersions at 30.0°C between shear rates of 8.5–685 s ‐1. Variation of model parameters with surfactant (Brij 30) concentration was computed for each HEC dispersion. A shear sensitive interaction between the surfactant and the cellulose polymer was noted.