Dresden 2011 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 44: Functional Materials II

MM 44.9: Vortrag

Freitag, 18. März 2011, 12:30–12:45, IFW A

Stability of polymer-ceramics interfaces in hybrid materials: The role of coupling agents and surfactants — •Wolfgang Heckel, Kristina Brandt, Tobias C. Kerscher, Sascha B. Maisel, Gerold A. Schneider, and Stefan Müller — Technische Universität Hamburg-Harburg, Institut für Keramische Hochleistungswerkstoffe, Denickestr. 15, D-21073 Hamburg

The mechanical properties of hierarchically structured materials like ceramics-polymer systems heavily depend on the composition of the interface materials and the choice of an optional adhesive. As an example we have investigated the Titaniumdioxide-PMMA system by application of different experimental techniques. In order to control the properties of the system, we use density functional theory to analyze the stability of this interface and compare different surfactants, adhesives and coupling agents. Indeed, a detailed knowledge of the local electronic and energetic behaviour at the polymer-agent-ceramics interface is crucial. The resulting energetics and electronic properties depend on both the agent-ceramics and the agent-polymer bond stength.