Journal Article

PreJuSER-21349

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Stress and neutron scattering measurements on linear polymer melts undergoing steady elongational flow

Hassager, O. ; Mortensen, K. ; Bach, A. ; Almdal, K. ; Rasmussen, H. K. ; Pyckhout-Hintzen, W.FZJ*

2012
Springer Berlin

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Please use a persistent id in citations: doi:10.1007/s00397-012-0622-1

Abstract: 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 sigma, 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.

Keyword(s): J ; Scattering (auto) ; Polymer melt (auto) ; Uniaxial extension (auto) ; Polystyrene (auto)

Note: We are grateful to the Danish Technical Research Council for financial support to the Danish Polymer Centre, to the Danish Natural Science Council for financial support in the DANSCATT grant and to the Paul Scherrer Institut for use of their neutron beam facility, and the SoftComp EU-Networks of Excellence.

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Contributing Institute(s):

1. Neutronenstreuung (ICS-1)
2. Neutronenstreuung (JCNS-1)

Research Program(s):

1. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (FUEK505) (FUEK505)
2. 544 - In-house Research with PNI (POF2-544) (POF2-544)

Appears in the scientific report 2012

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Database coverage:
JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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