Polyelectrolyte diffusion in layer-by-layer films approaching the glass temperature
Center-of-mass diffusion of the polyanion within polyelectrolyte multilayers prepared by Layer-by-Layer technique is measured at different temperatures using neutron reflectometry in the TOF mode. Preliminary experiments suggest that the diffusion constant of the polymers increases by at least four orders of magni-tude on approach of the glass temperature. Furthermore, the influence of the polycation molecular weight and the salt concentration is to be investigated. Temperature equilibration and liquid/liquid exchange will be tested on the first day of experiments. These experiments constitute an essential part of the doctoral theses of Amir Azinfar and Annekatrin Sill.
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HELM Christiane A.; AZINFAR Amir; GUTFREUND Philipp; MICCIULLA Samantha; NEUBER Sven; SAERBECK Thomas and SILL Annekatrin. (2020). Polyelectrolyte diffusion in layer-by-layer films approaching the glass temperature. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1958
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