Departments > Polyelectrolytes and Disp... > Fields of work > Nuclear magnetic resonanc... > Rheological NMR
- Flow of polymer melts under shear
- Molecular insight into rheological properties
- Complex geometry to simulate processing device
- NMR contrast for the selective investigation in complex systems
- From combination of PFG NMR with NMR imaging a spatially resolved flow field is measured non invasively.
- Velocity distribution and flow field
- Surface reconstruction from images recorded with T1-filter
- In-plane velocity depicted by arrows
- Out-of-plane velocity indicated by the color scheme for each pixel
- Complex flow in a system of oil and water in the interface
Coworkers
Equipment
- Bruker Avance 300
- Rheo NMR kit
in-house built probes
- Rheological NMR
- spatial distribution of polymer melts under shear
- velocity distribution and flow field
- all NMR parameters can be used to generate contrast
- from a combination of PFG NMR and imaging a spatially resolved flow fields measured
- non invasive
- spatial distribution of polymer melts under shear
- velocity distribution and flow field
- all NMR parameters can be used to generate contrast
Publications
- Antje Gottwald, Pavel Kuran, Ulrich Scheler
Separation of velocity distribution and diffusion using PFG NMR
Journal of Magnetic Resonance, 162, (2003), 364 - Antje Gottwald, Ulrich Scheler
High-temperature Rheo-NMR of polymer melts
Polymer Preprints, 44, (2003), 273
