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Updated: Jul 29, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Origin of dynamic heterogeneities in miscible polymer blends: A quasielastic neutron scattering study
1Institut fur Festkorperforschung, Forschungszentrum Julich, 52425 Julich, Germany and Institut Laue-Langevin, 156X, 38042 Grenoble CEDEX, France.
Abstract:
In order to investigate the origin of the often invoked nanoheterogeneities in miscible polymer blends, we have performed quasielastic neutron scattering experiments on the component dynamics within the miscible polymer blend polyisoprene/polyvinyl ether including the pure components as a reference. We find that the apparent local heterogeneities observed by spectroscopic techniques originate from the chain specific crossover properties between entropy driven and local chain dynamics and are, thus, a purely dynamical phenomenon.
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