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Compensation effects in viscosity‐temperature dependence of polymer melts
Author(s) -
Tanguy P. A.,
Choplin L.,
Hurez P.
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760280807
Subject(s) - materials science , thermodynamics , arrhenius equation , viscosity , compensation (psychology) , temperature dependence of liquid viscosity , shear thinning , constant (computer programming) , shear rate , polymer , thermal , inherent viscosity , relative viscosity , composite material , intrinsic viscosity , chemistry , activation energy , physics , psychology , computer science , psychoanalysis , programming language
The thermal dependence of the parameters of the Carreau A model of viscosity has been investigated for 13 polymeric resins. It was shown that the zero‐shear viscosity and the time constant obey an Arrhenius‐type law and that, for these parameters, compensation effects are exhibited. The shear‐thinning index was found to be fairly independent of temperature. An important consequence of a compensation effect is that only one determination of a parameter at a given temperature gives the complete temperature‐dependence of this parameter.