Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 7: POSTERS Rheology

CPP 7.9: Poster

Montag, 25. Februar 2008, 16:45–19:00, Poster A

Surface enrichment in statistical copolymer films — •Alexander Diethert, Ezzeldin Metwalli Ali, and Peter Müller-Buschbaum — TU München, Physik-Department LS E13, James-Franck-Str. 1, 85747 Garching

A prominent class of pressure sensitive adhesive (PSA) films is based on statistical copolymers. Typically two or three different monomers are combined to balance the different requests of the PSA films. In the presented work we focus on model systems and investigate the dependence on different monomers of the copolymer. With x-ray reflectivity the density profile perpendicular to the PSA surface is probed and enrichment layers are detected. From a model fit the type of monomer enriching at the surface and the thickness of the enrichment layer is detected.
This work is funded by the DFG in the project MU1487/4-2.