Journal article
Stress and neutron scattering measurements on linear polymer melts undergoing steady elongational flow
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
The Danish Polymer Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark2
University of Copenhagen3
Technical University of Denmark4
Department of Micro- and Nanotechnology, Technical University of Denmark5
Department of Mechanical Engineering, Technical University of Denmark6
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark7
Forschungszentrum Jülich GmbH8
We use small-angle neutron scattering to measure the molecular stretching in polystyrene melts undergoing steady elongational flow at large stretch rates. The radius of gyration of the central segment of a partly deuterated polystyrene molecule is, in the stretching direction, increasing with the steady stretch rate to a power of about 0.25.
This value is about half of the exponent observed for the increase in stress value σ, in agreement with Gaussian behavior. Thus, finite chain extensibility does not seem to play an important role in the strongly non-linear extensional stress behavior exhibited by the linear polystyrene melt.
| Language: | English |
|---|---|
| Publisher: | Springer-Verlag |
| Year: | 2012 |
| Pages: | 385-394 |
| ISSN: | 14351528 and 00354511 |
| Types: | Journal article |
| DOI: | 10.1007/s00397-012-0622-1 |
| ORCIDs: | 0000-0002-8998-9390 , Hassager, Ole , Almdal, Kristoffer and Rasmussen, Henrik K. |
