Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 47: Poster: Interfaces and Thin Films
CPP 47.1: Poster
Mittwoch, 9. März 2016, 18:15–21:00, Poster B2
Metal ions at metal/polymer interfaces — •Maria Sonnenberg1, René Gustus1, Wolfgang Maus-Friedrichs1, Herbert Scheerer2, Juan Pablo Vega Triana2, Sascha Sedelmeier3, and Jürgen Wieser3 — 1Clausthaler Zentrum für Materialtechnik, Agricolastraße 2, 38678 Clausthal-Zellerfeld, Germany — 2Zentrum für Konstruktionswerkstoffe, Grafenstraße 2, 64382 Darmstadt, Germany — 3Frauenhofer LBF, Schlossgartenstraße 6, 64289 Darmstadt, Germany
Understanding the interaction between thin polymer films and metal surfaces is necessary for the plastics processing industry. During the processing of plastic, polymer is melted in the extruder unit. Often thin polymer layers are formed on the surface of the extruder, which leads to peeling off of partly solidified polymer into the melt. These polymer particles will not melt again and generate weak points within the product. Basic understanding of these mechanisms is important in order to avoid steel/polymer interaction. For this purpose thin layers of polycarbonate were prepared by bottom up procedures on different metal substrates and heated up to 280°C. The interfaces were examined by electron spectroscopic (XPS, AES) and microscopic (SEM, AFM) techniques. Experiments show that the diffusion of iron ions in the polymer melt occurs. Same characteristics could not be found for thin polymer layers on chromium substrate. Further experimental results and a mechanism of iron diffusion in thin polymer layers will be shown.