Steady state measurements in stress plateau region of entangled polymer solutions: Controlled-rate and controlled-stress modes

Journal of Rheology

Volumn 52, Issue 4, 2008, Pages 957-980

  Ravindranath, Sham ^a   Wang, Shi Qing ^a  

^a The University of Akron   (United States)

Author keywords

Edge fracture; Entanglement disentanglement transition; Steady state shear; Stress plateau region

Indexed keywords

EDGE EFFECTS; EDGE FRACTURE; ENTANGLED POLYMER SOLUTIONS; ENTANGLED POLYMERS; ENTANGLEMENT-DISENTANGLEMENT TRANSITION; FLOW CURVES; IN-SITU; NON-LINEAR FLOW; POLYMER RHEOLOGY; REDUCED VISCOSITY; RELIABLE MEASUREMENTS; RHEOLOGICAL MEASUREMENTS; RHEOMETRY; STEADY STATE SHEAR; STEADY STATES; STEADY-STATE MEASUREMENTS; STRESS MODES; STRESS PLATEAU; STRESS PLATEAU REGION; VELOCITY PROFILING; VISCOELASTIC MATERIALS;

COLLOIDS; ELECTRIC DISCHARGE MACHINING; FRACTURE FIXATION; HYDRODYNAMICS; POLYMER SOLUTIONS; RHEOLOGY; SOLUTIONS; SUPRAMOLECULAR CHEMISTRY; VISCOSITY;

POLYMERS;

EID: 46049119253     PISSN: 01486055     EISSN: None     Source Type: Journal    
DOI: 10.1122/1.2936869     Document Type: Article

References (22)

1. Bercea, M., C. Peiti, B. Simionescu, and P. Navard, " Shear rheology of semi-dilute poly(methyl methacrylate) solutions.," Macromolecules 26, 7095-7096 (1993).
2. Boukany, P. E., and S. Q. Wang, " A correlation between velocity profile and molecular weight distribution in sheared entangled polymer solutions.," J. Rheol. 51, 217-233 (2007).
3. Graham, R. S., A. E. Likhtman, T. C. B. McLeish, and S. T. Milner, " Microscopic theory of linear, entangled polymer chains under rapid deformation including chain stretch and convective constraint release.," J. Rheol. 47, 1171-1200 (2003).
4. Hu, T. Y., L. Wilen, A. Philips, and A. Lips, " Is the constitutive relation for entangled polymers monotonic?," J. Rheol. 51, 275-295 (2007).
5. Huppler, J. D., I. F. Macdonal, E. Ashare, T. W. Spriggs, and R. B. Bird, " Rheological properties of three solutions. Part II. Relaxation and growth of shear and normal stresses.," Trans. Soc. Rheol. 11, 181-204 (1967).
6. Incropera, F. P. and D. P. DeWitt, Fundamentals of Heat and Mass Transfer, 4th ed. (Wiley, New York, 1996).
7. Inn, Y. W., K. F. Wissbrun, and M. M. Denn, " Effect of edge fracture on constant torque rheometry of entangled polymer solutions.," Macromolecules 38, 9385-9388 (2005).
8. Islam, M. T., J. S. Reyes, and L. A. Archer, " Step and steady shear responses of nearly monodisperse highly entangled 1,4-polybutadiene solutions.," Rheol. Acta 42, 191-198 (2003).
9. Meissner, J., R. Garbella, and J. Hostettler, " Measuring normal stress differences in polymer melt shear flow.," J. Rheol. 33, 843-864 (1989).
10. Menezes, E. V., and W. W. Graessley, " Non-linear rheological behavior of polymer systems for several shear-flow histories.," J. Polym. Sci., Polym. Phys. Ed. 20, 1817-1833 (1982).
11. Mhetar, V. R., and L. A. Archer, " A new proposal for polymer dynamics in steady shearing flows.," J. Polym. Sci., Polym. Phys. Ed. 38, 222-233 (2000).
12. Osaki, K., M. Fukuda, S. Ohta, B. S. Kim, and M. Kurata, " Nonlinear viscoelasticity of polystyrene solutions. II. Non-Newtonian viscosity.," J. Polym. Sci., Polym. Phys. Ed. 13, 1577-1589 (1975).
13. Osaki, K., T. Inoue, and T. Isomura, " Stress overshoot of polymer solutions at high rates of shear.," J. Polym. Sci., Polym. Phys. Ed. 38, 1917-1925 (2000).
14. Pattamaprom, C., and R. G. Larson, " Constraint release effects in monodiesperse and bidisperse polystyrenes in fast transient shearing flows.," Macromolecules 34, 5229-5237 (2001).
15. Ravindranath, S., and S. Q. Wang, " What are the origins of stress relaxation behaviors in step shear of entangled polymer solutions?," Macromolecules 40, 8031-8039 (2007).
16. Ravindranath, S., S. Q. Wang, M. Olechnowicz, and R. P. Quirk, " Banding in simple steady shear of entangled polymer solutions.," Macromolecules 41, 2663-2670 (2008).
17. Schweizer, T., " Measurement of the first and second normal stress differences in a polystyrene melt with a cone and partitioned plate tool.," Rheol. Acta 41, 337-344 (2002).
18. Schweizer, T., " Comparing cone-partitioned plate and cone-standard plate shear rheometry of a polystyrene melt.," J. Rheol. 47, 1071-1085 (2003).
19. Sui, C., and G. B. McKenna, " Instability of entangled polymers in cone and plate rheometry.," Rheol. Acta, 46, 877 (2007). This paper made a rather thorough survey of the current knowledge of edge fracture that we will omit here. This paper pointed out "If an EDT transition proceeds, the edge distortion and mass loss cannot be ascertained by the present work." In other words, it could not be ruled out that a genuine EDT would occur in well-entangled polymers when sheared at a constant stress comparable to the elastic plateau modulus.
20. Tapadia, P., and S. Q. Wang, " Nonlinear flow behavior of entangled polymer solutions: Yieldlike entanglement-disentanglement transition.," Macromolecules 37, 9083-9095 (2004).
21. Tapadia, P., and S. Q. Wang, " Direct visualization of continuous simple shear in non-Newtonian polymeric fluids.," Phys. Rev. Lett. 96, 016001 (2006).
22. Wang, S. Q., S. Ravindranath, Y. Wang, and P. Boukany, " New theoretical considerations in polymer rheology: Elastic breakdown of chain entanglement network.," J. Chem. Phys. 127, 064903 (1-14) (2007).