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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 23: Polymer Dynamics

CPP 23.4: Vortrag

Mittwoch, 13. März 2013, 10:30–10:45, H39

Selective Solid-State NMR Investigations of Polymer Dynamics — Ute Böhme, Anastasia Vyalikh, and •Ulrich Scheler — Leibniz-Institut für Polymerforschung Dresden e.V.

NMR relaxation provides information on the molecular dynamics over a wide range of correlation times. To achieve spectral resoltion in solid polymers high-resolution solid-state NMR based on CRAMPS (combined multipulse and rotation spectroscopy) has been applied. The spectral resolution permits to resolve different components in copolymers and mixtures in proton NMR spectra. The sensitivity in the proton spectra will permit the study of thin films as well. Selective swelling of single components which is accompanied by enhanced segmental dynamics has been observed in both spn-spin-relaxation (T2) and spin-lattice relaxation in the rotating frame (T1rho). Spectral resolution permits the identification of the components and assignments of their local mobility.