The Flow of Moderately Concentrated Polymer Solutions in Water
作者:
F. Rodriguez,
L. A. Goettler,
期刊:
Transactions of the Society of Rheology
(AIP Available online 1964)
卷期:
Volume 8,
issue 1
页码: 3-17
ISSN:0148-6055
年代: 1964
DOI:10.1122/1.548976
出版商: The Society of Rheology
数据来源: AIP
摘要:
The flow curves for four water‐soluble, non‐ionic polymer types have been characterized using rotational viscometers primarily. Molecular weight and solution concentration variations gave a total of twenty‐five curves. Polyacrylamide, poly(ethylene oxide), hydroxyethyl cellulose, and methyl cellulose were studied. A two‐parameter model that gives a good fit to the data over five decades of shear‐rate is:log (ηr)/log (ηr)0=0.68−0.32 erf {[log (τγ̇)−log B]/2.272}In this equation,ηris the relative viscosity;(ηr)0,the same at zero shear‐rate, erf, the error function;(τγ̇),the rate of energy dissipation; and,B, the value of(τγ̇)at the inflection point of the flow curve. Furthermore,Bis independent of concentration.
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