Coil-Stretch Hysteresis

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• The polymeric stress and birefringence measured during rapid stretching (De >1) evolve following different pathways

  • “Molecular Individualism”; P.G. DeGennes, Science 1997.

• ‘Stress-Optical Rule’ becomes a functional of strain history:

Doyle et al., JNNFM 1998

Larson et al., Rheol. Acta, 2000

Bead Rod Simulation

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