4.15 pm in seminar room 1.27 Von-Danckelmann-Platz 4, 06120 Halle
We try to offer the hybrid option, but cannot guarantee it!University of Bayreuth, Department of Chemistry
“Polymer Defects in Weathered Microplastics and Self-Aggregation of Polymer Additives – Probing Minority Components by NMR Spectroscopy”
Chemical modifications and additions to polymers dramatically change the properties of the base polymers, even if these changes occur with minuscule proportions of only a few hundred ppm. Here we show, that techniques for signal enhancement like SEOP and DNP can be used to overcome the sensitivity challenge of NMR spectroscopy and allow to characterize structural aspects and identify chemical functionalities for the minority components. The lecture will discuss the implications of the self-aggregated additive objects on the polymer properties and the potential effects of abiotically degraded microplastics in environmental compartments.