Bindungsdynamik in Pseudo-blockcopolymeren

Die Untersuchung von dynamischen Eigenschaften in supramolekularen Polymeren steht im Mittelpunkt dieses Projektes. Neuartige, supramolekulare Polymere werden im Rahmen dieses Projektes synthetisch hergestellt, und hernach über physikochemische Methoden (SAXS, NMR, Rheologie) in Hinblick auf Ihre Dynamik untersucht.

The current proposal deals with the generation of microphase separated pseudo-blockcopolymers, focusing on their dynamic behavior in the solid state, with a long-term perspective on the generation of self-healing materials. In contrast to the normally used covalent bond in blockcopolymers between immiscible polymers, hydrogen bonding systems (exerting binding strength ranging from Kassn ~ 25 M-1 till ~100,000 M-1, thus displaying a kinetic spectrum of formation/reformation ranging from ~0.01 s-1 to ~100 s-1) will be used to act as attractive force between immiscible, telechelic polymers. Dynamic-mechanical measurements, small angle x-ray scattering (SAXS), in-situ-Rheo-SAXS and solid-state NMR-spectroscopy will be used to gain information on the mobility of individual polymer chains and the nature of the hydrogen-bonds acting as molecular glue between them.