Significance of the Longest Rouse Relaxation Time in the Stress Relaxation Process at Large Deformation of Entangled Polymer Solutions

2002 ◽  
Vol 35 (12) ◽  
pp. 4718-4724 ◽  
Author(s):  
Tadashi Inoue ◽  
Takehiko Uematsu ◽  
Yasuhiro Yamashita ◽  
Kunihiro Osaki
Keyword(s):  
Relaxation Time ◽  
Stress Relaxation ◽  
Relaxation Process ◽  
Large Deformation ◽  
Polymer Solutions ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

What Are the Origins of Stress Relaxation Behaviors in Step Shear of Entangled Polymer Solutions?

2007 ◽  
Vol 40 (22) ◽  
pp. 8031-8039 ◽  
Author(s):  
Sham Ravindranath ◽  
Shi-Qing Wang
Keyword(s):  
Stress Relaxation ◽  
Polymer Solutions ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

Molecular weight and concentration dependences of the terminal relaxation time and viscosity of entangled polymer solutions

1987 ◽  
Vol 20 (9) ◽  
pp. 2250-2256 ◽  
Author(s):  
R. W. Rendell ◽  
K. L. Ngai ◽  
G. B. McKenna
Keyword(s):  
Molecular Weight ◽  
Relaxation Time ◽  
Polymer Solutions ◽  
Concentration Dependences ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

Extensional stress growth and stress relaxation in entangled polymer solutions

2003 ◽  
Vol 47 (1) ◽  
pp. 269-290 ◽  
Author(s):  
P. K. Bhattacharjee ◽  
D. A. Nguyen ◽  
G. H. McKinley ◽  
T. Sridhar
Keyword(s):  
Stress Relaxation ◽  
Polymer Solutions ◽  
Stress Growth ◽  
Extensional Stress ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

Molecular hydrodynamic transition phenomena in entangled polymer solutions studied by quasielastic light scattering

1980 ◽  
Vol 30 (1) ◽  
pp. 267-276 ◽  
Author(s):  
A. M. Jamieson ◽  
H. Reihanian ◽  
J. G. Southwick ◽  
T. L. Yu ◽  
J. Blackwell
Keyword(s):  
Light Scattering ◽  
Polymer Solutions ◽  
Quasielastic Light Scattering ◽  
Molecular Hydrodynamic ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

Surface-tension-driven breakup of viscoelastic liquid threads

1982 ◽  
Vol 120 ◽  
pp. 245-266 ◽  
Author(s):  
Simon L. Goren ◽  
Moshe Gottlieb
Keyword(s):  
Relaxation Time ◽  
Stress Relaxation ◽  
Polymer Solutions ◽  
Small Diameter ◽  
Shear Thinning ◽  
Prior History ◽  
Axial Tension ◽  
Dilute Polymer Solutions ◽  
Linearized Stability ◽  
Newtonian Liquids

A linearized stability analysis is carried out for the breakup of small-diameter liquid filaments of dilute polymer solutions into droplets. Oldroyd's 8-constant model expressed in a corotational reference frame is used as the rheological equation of state. The crucial idea in this theory is the recognition that the liquid may be subject to an unrelaxed axial tension due to its prior history. If the tension is zero, the present analysis predicts that jets of shear-thinning liquids are less stable than comparable jets of Newtonian liquids; this is in agreement with previous analyses. However, when the axial tension is not zero, and provided the stress relaxation time constant is sufficiently large, the new theory predicts that the axial elastic tension can be a significant stabilizing influence. With reasonable values for the tension and stress relaxation time the theory explains the great stability observed for jets of some shear- thinning, dilute polymer solutions. The theory explains why drops produced from jets of such liquids are larger than drops from corresponding Newtonian liquids. The theory also appears capable of explaining the sudden appearance of irregularly spaced bulges on jets after long distances of t,ravel with little amplification of disturbances.

Large-Scale Heterogeneities in Entangled Polymer Solutions. Light-Scattering Study on Polystyrene in Toluene

1997 ◽  
Vol 30 (15) ◽  
pp. 4454-4458 ◽  
Author(s):  
M. Heckmeier ◽  
M. Mix ◽  
G. Strobl
Keyword(s):  
Light Scattering ◽  
Large Scale ◽  
Polymer Solutions ◽  
Scattering Study ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions

Mathematical model for DNA separation by capillary electrophoresis in entangled polymer solutions

2007 ◽  
Vol 1142 (2) ◽  
pp. 222-230 ◽  
Author(s):  
Chunye Liu ◽  
Xu Xu ◽  
Qian Wang ◽  
Jierong Chen
Keyword(s):  
Mathematical Model ◽  
Capillary Electrophoresis ◽  
Polymer Solutions ◽  
Dna Separation ◽  
Entangled Polymer ◽  
Entangled Polymer Solutions
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