Abstract
The applicability of a strain-coupling integral constitutive equation to the analysis of the nonlinear viscoelasticity of branched polymers is evaluated. A simpler and more efficient method is proposed for evaluating the material functions of the strain-coupling constitutive equation.
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References
Doi M (1980) Stress relaxation of polymeric liquids after double-step strain. J Polym Sci Phys Ed 18:1891–1905
Khan SA, Prud'homme RK, Larson RG (1987) Comparison of the theology of polymer melts in shear, and biaxial and uniaxial extensions. Rheol Acta 26:144–151
Khan MMK, Tanner RI (1990) Rheology of an LDPE melt in reversing multistep shear and elongational flows. Rheol Acta 29:281–297
Samurkas T, Larson RG, Dealy JM (1989) Strong extensional and shearing flows of a branched polyethylene. J Rheol 33:559–578
Venerus DC, Vrentas CM, Vrentas JS (1990) Step strain deformations for viscoelastic fluids: Experiment. J Rheol 34:657 - 683
Vrentas JS, Venerus DC, Vrentas CM (1990a) Consistency tests for start-up and cessation deformations of viscoelastic fluids. Rheol Acta 29:298 - 309
Vrentas JS, Vrentas CM, Venerus DC (1990b) Consistency relations for double-step strain experiments. Macromolecules 23:5133 - 5136
Vrentas JS, Venerus DC, Vrentas CM (1991 a) Finite amplitude oscillations of viscoelastic fluids. J Non-Newtonian Fluid Mech 40:1–24
Vrentas JS, Venerus DC, Vrentas CM (1991 b) Step strain deformations for viscoelastic fluids: Formulation of a strain-coupling constitutive equation. J Polym Sci Phys Ed 29:537 - 545
Vrentas JS, Vrentas CM, Venerus DC (1991 c) Evaluation of the Wagner irreversible constitutive equation. Rheol Acta 30:175 -179
Vrentas JS, Vrentas CM, Venerus DC (1992) Evaluation of an integral constitutive equation for nonlinear viscoelasticity. J Non-Newtonian Fluid Mech 42:351- 368
Wagner MH (1978) A constitutive analysis of uniaxial elongational flow data of a low-density polyethylene melt. J Non-Newtonian Fluid Mech 4:39 - 55
Wagner MH, Stephenson SE (1979a) The irreversibility assumption of network disentanglement in flowing polymer melts and its effects on elastic recoil predictions. J Rheol 23:489 - 504
Wagner MH, Stephenson SE (1979b) The spike-strain test for polymeric liquids and its relevance for irreversible destruction of network connectivity by deformation. Rheol Acta 18:463 - 468
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Vrentas, J.S., Vrentas, C.M. & Venerus, D.C. Strain-coupling effects in branched polymers. Rheologica Acta 32, 74–81 (1993). https://doi.org/10.1007/BF00396679
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DOI: https://doi.org/10.1007/BF00396679