| AVS 60th International Symposium and Exhibition | |
| Surface Science | Wednesday Sessions |
| Session SS+AS+NS+SP-WeA |
| Session: | Single Molecules at Surfaces: Structure and Dynamics |
| Presenter: | H.A. Terryn, VUB/TU Delft, Belgium |
| Authors: | H.A. Terryn, VUB/TU Delft, Belgium T. Taheri, TU Delft, the Netherlands T. Hauffman, VUB, Belgium O. Ozkanat, TU Delft, the Netherlands J.A. Mol, TU Delft, the Netherlands |
| Correspondent: | Click to Email |
During the functional lifetime of coated metals, interfacial bonds at polymer/(oxyhydr)oxide/metal joints have to withstand high mechanical forces and corrosive attack. Therefore, it is crucial to control and understand the bonding mechanism originating at polymer/(oxyhydr)oxide/metal interfaces in order to achieve long-term stability. While the type of bonding contributes to the strength of adhesion, the nature of the interface depends on both functionality present in the organic molecules of the coating and the nature of the oxide film e.g. hydration, hydroxyl content, oxide thickness, surface morphology and chemical composition. Those properties might be extremely sensitive to the small changes in the environmental conditions, such as ageing and humidity.
Studying the bonding properties of the polymeric coating to the metal surface is experimentally difficult, because the interface is hard to be reached by analytical techniques due to the relatively high thickness of the polymer coatings. Consequently, the interfacial bonding can be modeled through adsorption of functional groups -representative interfacial adhesive molecules- on differently pretreated surfaces by means of bonding mechanism (FTIR) and affinity (XPS) studies. Furthermore, the buried interface and delamination mechanisms at this location can be studied by Scanning Kelvin Probe (SKP) measurements.
Recent References
In situ study of buried interfacial bonding mechanisms of carboxylic polymers on Zn surfaces, Journal of Physical Chemistry C, Volume: 117, N° in volume: 7, pp: 3374 - 3382, 2013, Taheri p., Flores J., Hannour F., de Wit J., Terryn H., Mol J.
Effects of Zinc Surface Acid-Based Properties on Formation Mechanisms and Interfacial Bonding Properties of Zirconium-Based Conversion Layers, Journal of Physical Chemistry C, Volume: 116, pp: 8426 - 8436, 2012, Taheri p., Lill K., de Wit J., Mol J., Terryn H.
A comparison of the interfacial bonding properties of carboxylic acid functional groups on zinc and iron substrates, Electrochimica Acta, Volume: 56, pp: 1904 - 1911, 2011, Taheri p., Wielant J., Hauffman T., Reyes Flores J., Hannour F., de Wit J., Mol J., Terryn H.
Role of surface oxide properties on the aluminum/epoxy interfacial bonding, Journal of Physical Chemistry C, Volume: 117, N° in volume: 9, pp: 4480 - 4487, 2013, Salgin B., Ozkanat O., Mol J., Terryn H., Rohwerder M.
Bonding mechanisms at buried interfaces between carboxylic polymers and treated zinc surfaces, Journal of Physical Chemistry C, Volume: 117, N° in volume: 6, pp: 2780 - 2792, 2013, Taheri p., Ghaffari M., Flores J., Hannour F., de Wit J., Mol J., Terryn H.