Large step shear experiments revealed through particle tracking velocimetry that entangled polymeric liquids display either internal macroscopic movements upon shear cessation or rupturelike behavior during shear. Visible inhomogeneous motions were detected in five samples with the number of entanglements per chain ranging from 20 to 130 at amplitudes of step strain as low as 135%.
Physical Review Letters
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Copyright 2006 American Institute of Physics. The original published version of this article may be found at http://dx.doi.org/10.1103/PhysRevLett.97.187801.
Wang, Shi-Qing; Ravindranath, Sham; Boukany, Pouyan; Olechnowicz, Michael; Quirk, Roderic P.; and Mays, Jimmy, "Nonquiescent Relaxation in Entangled Polymer Liquids After Step Shear" (2006). College of Polymer Science and Polymer Engineering. 107.