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Rheological properties of polymer‐added lubricating oils
Author(s) -
Derdouri A.,
AitKadi A.,
Carreau P. J.
Publication year - 1988
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.5450660502
Subject(s) - rheology , viscoelasticity , lubricant , dimensionless quantity , polymer , viscosity , shear rate , materials science , mineral oil , lubrication , thermodynamics , viscosity index , solvent , work (physics) , composite material , polymer chemistry , polymer science , chemistry , organic chemistry , base oil , metallurgy , scanning electron microscope , physics
Rheological measurements of polyisobutylene solutions are presented. A mineral oil of low viscosity has been used as solvent. The combined effects of concentration, molecular weight and temperature were studied. It is found that the rheological data, when plotted as N 1 λ E /(η‐η s ) versus λ E γ fall on a master curve over several decades of the dimensionless shear rate, irrespective of temperature, polymer concentration and molecular weight. The findings of this work can be used to address the problem of hydrodynamic lubrication of a journal bearing using a viscoelastic lubricant.