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[Seminar] P3S Webinar: Polymer dynamics
October 15 @ 4:00 pm - 5:00 pm
P3S Webinar by Institute of Physics, MLU
Thursday, October 15th, 2020, 4 pm CEST
The online meeting takes places via zoom. More information: http://www.physik.uni-halle.de/fachgruppen/nmr/p3s-webinar/upcoming-p3s-webinars/
Dr. Whitney Loo
Chemical and Biomolecular Engineering, UC Berkely, U Chicago
Polymer dynamics in block copolymer electrolytes detected by neutron spin echo spectroscopy
We investigated the effect of salt concentration on the polymer dynamics of a nanostructured block copolymer electrolyte on the 0.1-100 ns time-scale using the Rouse and reptation tube model. In this talk, I will demonstrate how quantifying chain motion in the presence of ions is essential for predicting the behavior of polymer-electrolyte-based batteries operating at large currents.
Prof. Dr. Michael Vogel
Dept. of Physics, Solid-State Physics, Technische Universität Darmstadt
NMR studies of rotational and translational diffusion in polymer electrolytes and ionic liquids
In my talk, I will combine manifold NMR methods to study rotational dynamics and translational diffusion in polymer electrolytes and ionic liquids in broad ranges of time and length scales. In particular, I will discuss to which extent nanoscopic concentration fluctuations in these mixtures affect the relation of local and diffusive dynamics for the individual constituents and, thus, the transport mechanisms.