Dynamics of the PEO-PPO-PEO tri-block-copolymer L31 investigated by quasielastic neutron scattering

The dynamics of the triblock copolymer L31 have been measured with fixed window and energy resolved scans on the backscattering spectrometer IN16. Both techniques yield consistent values for the activation energies for a local and a translational diffusion mode. A data set at 1200 bar indicates that the activation energy for the translation decreases with pressure while the activation energy for the rotation remains unchanged.