Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 23: Polymer Dynamics

CPP 23.6: Vortrag

Mittwoch, 13. März 2013, 11:00–11:15, H39

Deformation Dynamics of Thin Stretched Polymer Films — •Stefan Krause, Martin Neumann, Melanie Bibrach, Robert Magerle, and Christian von Borczyskowski — Fakultät für Naturwissenschaften, TU Chemnitz, D-09107 Chemnitz

The fluorescence of polymer embedded reporter molecules reacts very sensitive on environmental changes such as mechanical stress. Especially polarization effects of these fluorophores allow for the spatial and temporal observation of the deformation within drawn polymer films while the utilization of ultra sensitive force sensors enables to measure the global mechanical deformation behaviour of the polymer film. We report on fluorescence (single molecule) microscopy, atomic force and mechanical force investigations of thin films of viscoelastic polymethylacrylate (PMA). The films are stretched using a micro tensile testing setup. Simultaneously, perylenediimide dyes functionalized with different side chains were embedded in the film and report via their molecular dynamics changes within their local environment.