Experimental validation of a tube based constitutive equation for linear polymer melts with inter-chain tube pressure effect

Abstract : A polydisperse case of an entangled linear polymer melts constitutive equation was studied. This constitutive equation, proposed by S. Dhole et al. [J. Non-Newtonian Fluid Mech. 161 (2009) 10-18], based on the reptation theory and the tube model, was tested on a polystyrene in shear (capillary rheometry) and planar extension in a complex flow (fieldwise measurements in a contraction flow) for different level of strain rates. A good quantitative prediction of all the set of experiments was obtained, using no adjustable nonlinear parameters.
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Rudy Valette, Ghalia Boukellal, Audrey Durin, Jean-François Agassant. Experimental validation of a tube based constitutive equation for linear polymer melts with inter-chain tube pressure effect. Mechanics & Industry, EDP Sciences, 2013, 14 (1), p. 79-84. ⟨10.1051/meca/2013048⟩. ⟨hal-00831240⟩

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