SKM 2023 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 3: Organic Thin Films, Organic-Inorganic Interfaces (joint session DS/CPP)

DS 3.5: Vortrag

Montag, 27. März 2023, 12:30–12:45, SCH A 315

Interaction of cyanoacrylate thin films with copper (oxide) in different processing atmospheres — •Philipp Moritz¹, Oliver Höfft², Lienhard Wegewitz¹, and Wolfgang Maus-Friedrichs¹ — ¹Clausthal Centre of Material Technology, Clausthal University of Technology, Agricolastrasse 2, 38678 Clausthal-Zellerfeld — ²Institute of Electrochemistry, Clausthal University of Technology, Arnold-Sommerfeld-Strasse 6, 38678 Clausthal-Zellerfeld

The adhesive class of fast-curing cyanoacrylates plays an increasingly important role, especially in hybrid composites. However, the adhesion mechanism at the interface to the metal (oxide) substrates is not sufficiently understood.
To study the interactions, cyanoacrylate films of a few nm thickness are spin-coated onto metallic copper and copper oxide in (i) a normal air atmosphere and in (ii) an oxygen-free environment (O₂ partial pressure < 10⁻²⁰ mbar). The natively oxidized copper is deoxidized with a dielectric barrier discharge (DBD plasma) directly before the coating process.
Spectroscopic and microscopic methods are used to understand the underlying molecular interactions at the interface between cyanoacrylate and copper (oxide). The formation of hydrogen bonds as well as an ionic interaction can be observed. In addition, an influence of the oxide layer and the effects of the surrounding atmosphere can be seen.
Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 394563137 – SFB 1368