Journal Article

PreJuSER-57699

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polymer Chain Dynamics in a Random Environment: Heterogeneous Mobilities

Niedzwiedz, K.FZJ* ; Wischnewski, A.FZJ* ; Monkenbusch, M.FZJ* ; Richter, D.FZJ* ; Genix, A.-C. ; Arbe, A. ; Colmenero, J. ; Strauch, M. ; Straube, E.

2007
APS College Park, Md.

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/7713  doi:10.1103/PhysRevLett.98.168301

Abstract: We present a neutron scattering investigation on a miscible blend of two polymers with greatly different glass-transition temperatures T-g. Under such conditions, the nearly frozen high-T-g component imposes a random environment on the mobile chain. The results demand the consideration of a distribution of heterogeneous mobilities in the material and demonstrate that the larger scale dynamics of the fast component is not determined by the average local environment alone. This distribution of mobilities can be mapped quantitatively on the spectrum of local relaxation rates measured at high momentum transfers.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Neutronenstreuung (IFF-5)

Research Program(s):

1. Kondensierte Materie (P54)
2. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)

Appears in the scientific report 2007

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Database coverage:
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