Wednesday, March 19, 2008 - 1:05 PM
Convention Center, Second Level, 220 (Ernest N. Morial Convention Center)

Adhesion promoting films and monolayers at polymer/oxide/metal interfaces

Guido Grundmeier, University of Paderborn; Markus Valtiner and René Vlasak, MPI für Eisenforschung

The design of long-term stable and corrosion resistant polymer/oxide/metal interfaces profits from the analysis and understanding of the interfacial chemical and electrochemical properties. Mainly in-situ analytical studies are of increasing interest for the characterization of the molecular mechanisms of adhesion and de-adhesion under ambient conditions. In-situ techniques such as FTIR- and Raman spectroelectrochemistry, Chemical Force Microscopy and the Scanning Kelvin Probe Blister Test will be highlighted. We combine the analysis of defined interfaces and surfaces with computational chemistry. The theoretical approach enables the analysis of substrate surface structures, interfacial chemical bonds and adsorption as well as de-sorption processes. In our group systems under investigation are organosilanes and organophosphonic acids as molecular adhesion promoters on oxide covered zinc and aluminium oxides. 
The thereby generated knowledge serves as basis for the design of highly stable interfaces between polymeric films and oxide covered metal substrates.
The presentation gives an overview about the relevant recent research and tries to bridge the gap between the theoretical aspects of interface chemistry and technically relevant surface chemical processes.

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