This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1016/j.polymer.2016.07.017 in citations.
Mixtures of polymer architectures: Probing the structure and dynamics with neutron scattering
Mixtures of polymer architectures: Probing the structure and dynamics with neutron scattering
We review some of our latest contributions in the field of neutron scattering of polymers with linear and non-linear architecture. On the one hand, the reviewed Small Angle Neutron Scattering investigations cover dilute mixtures of dendritic polymers and linear polymers that were investigated during...
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Personal Name(s): | Pyckhout-Hintzen, W. (Corresponding author) |
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Wischnewski, A. / Richter, D. | |
Contributing Institute: |
Streumethoden; PGI-4 Streumethoden; JCNS-2 Neutronenstreuung; JCNS-1 Neutronenstreuung; ICS-1 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Polymer, 105 (2016) S. 378 - 392 |
Imprint: |
Oxford
Elsevier Science
2016
|
DOI: |
10.1016/j.polymer.2016.07.017 |
Document Type: |
Journal Article |
Research Program: |
Soft Matter, Health and Life Sciences Jülich Centre for Neutron Research (JCNS) Functional Macromolecules and Complexes |
Subject (ZB): | |
Publikationsportal JuSER |
We review some of our latest contributions in the field of neutron scattering of polymers with linear and non-linear architecture. On the one hand, the reviewed Small Angle Neutron Scattering investigations cover dilute mixtures of dendritic polymers and linear polymers that were investigated during relaxation after a fast step strain or in situ during a strain ramping. The focus was on the otherwise not accessible long time dynamics of the inner branches. The parameters of the model are those of the tube model and include the evolution of liberated chain ends, the size and time dependence of the confining tube diameter and branch-point related dynamics. The case of deformed tube diameters could be obtained from a permanently-linked network state as the limiting case of a deformed melt. On the other hand, recently, cyclic polymers as a special class of branched architectures showed to be of high significance to detect similar features directly from equilibrium measurements by means of quasi-elastic Neutron Spin Echo spectroscopy. We show that by means of polymer rings as a probe different aspects of the tube concept can be distinguished in a unique way. |