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Exploring stress overshoot phenomenon upon startup deformation of entangled linear polymeric liquids
Department of Polymer Science (2009)
  • Shi-Qing Wang, The University Of Akron
Abstract

This work explores the picture associated with stress overshoot during sudden continual (i.e., startup) external deformation of entangled polymeric liquids and proposes a specific scaling form to depict the intermolecular interactions responsible for chain deformation. Following a previously proposed idea that the stress overshoot in startup deformation is a signature of yielding, we search for ingredients that should go into the description of the force imbalance at the yield point and show that the expression for the intermolecular locking force fiml, derived from the characteristics associated with the yield point, can be tested against experiment. New rate-switching experiments support the proposed formula for fiml.

Publication Date
October 1, 2009
Citation Information
Shi-Qing Wang. "Exploring stress overshoot phenomenon upon startup deformation of entangled linear polymeric liquids" Department of Polymer Science Vol. 53 (2009)
Available at: http://works.bepress.com/shi-qing_wang/76/