Excluded volume effects on the birefringence and stress of dilute polymer solutions in extensional flow
β Scribed by Lei Li; Ronald Larson
- Publisher
- Springer-Verlag
- Year
- 2000
- Tongue
- English
- Weight
- 207 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0035-4511
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
We consider stagnation point flow away from a wall for creeping flow of dilute polymer solutions. For a simplified flow geometry, we explicitly show that a narrow region of strong polymer extension (a birefringent strand) forms downstream of the stagnation point in the UCM model and extensions, like
We present an extension of the Rouse-CCR tube model for linear entangled polymers, by incorporating interchain repulsive excluded-volume interactions, to interpret extensional viscosity data of narrow molecular weight distribution polystyrene melts in strong extensional flows. The expression for the
## Abstract **Summary:** Polymer orientation in dilute solutions undergoing shear flow is investigated computationally by means of the Brownian dynamics simulation technique applied to the beadβspring chain model. The dependence of the degree of orientation on the shear intensity is evaluated throu