PMID: 19113455Dec 31, 2008Paper

High resolution shear profile measurements in entangled polymers

Physical Review Letters
Keesha A HayesLynden A Archer

Abstract

We use confocal microscopy and particle image velocimetry to visualize motion of 250-300 nm. fluorescent tracer particles in entangled polymers subject to a rectilinear shear flow. Our results show linear velocity profiles in polymer solutions spanning a wide range of molecular weights and number of entanglements (8< or =Z< or =56), but reveal large differences between the imposed and measured shear rates. These findings disagree with recent reports that shear banding is a characteristic flow response of entangled polymers, and instead point to interfacial slip as an important source of strain loss.

References

Aug 9, 1993·Physical Review Letters·N A SpenleyT C McLeish
Feb 9, 2005·Physical Review Letters·M R López-GonzálezP J Photinos
Feb 21, 2006·Physical Review Letters·Prashant Tapadia, Shi-Qing Wang
Jun 29, 2006·Physical Review Letters·Prashant TapadiaShi-Qing Wang
Dec 13, 2006·Physical Review Letters·Itai CohenDavid A Weitz

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Citations

Jan 22, 2015·Soft Matter·Shi-Qing Wang
Jan 20, 2018·Physical Review. E·Seunghwan ShinXiang Cheng
Apr 27, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M Harvey, T A Waigh
Jun 11, 2021·Physical Review Letters·Michael C BurroughsMatthew E Helgeson

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