Pressure dependence of Newtonian viscosity

DOI	Resolve DOI: https://doi.org/10.1002/pen.760230806
Author	Search for: Utracki, L. A.¹
Affiliation	National Research Council Canada
Format	Text, Article
Abstract	Recently, a new method of generalization of the zero shear viscosity of liquids has been proposed. The method utilizes a modified Doolittle formula and the temperature‐dependent volume, as expressed by the corresponding states theory of liquids. Furthermore, the glass‐transition temperature has been employed as the scaling parameter. The proposed treatment allowed prediction of the correlation between: (i) viscosity, η, and temperature, T, (ii) η and the molecular weight of polymer, (iii) η and concentration, and (iv) the combined effect of these variables. At present, the method is extended to the pressure, P, effect. Furthermore, by substituting the free volume fraction in the Doolittle formula by the theoretical “hole fraction,” a master‐relation is proposed that provides means for predicting η = h(T, P) dependence
Publication date	1983-06-01
Publisher	Wiley
In	Polymer Engineering and Science 23, no. 8: 446–451.
Language	English
Peer reviewed	Yes
NRC number	CNRC 18993 NRC-IGM82-138-020
NPARC number	23004398
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Record identifier	8a1cd628-1d78-4d8d-b4ed-7f7d93af248d
Record created	2018-10-31
Record modified	2020-03-13