Dresden 2009 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 29: Nanoengineered Thin Films II

DS 29.5: Vortrag

Donnerstag, 26. März 2009, 12:15–12:30, GER 37

Investigation of Silver Release from 2d and 3d Metal/Polymer Nanocomposites — Vladimir Zaporojtchenko, •Thomas Strunskus, Venkata Girish Kotnur, Venkata Sai Kiran Chakravadhanula, Jan-Hendrik Pöhls, and Franz Faupel — Lehrstuhl für Materialverbunde, Technische Fakultät der CAU Kiel, Kiel

Metal-polymer nanocomposites have a host of functional applications ranging from optical and magnetic to antibacterial materials. While in the latter case metal ion release is essential for the antibacterial function, it is often detrimental and affects the stability and functionality of the nanocomposites during long-term aging. The mechanism and the kinetics of metal ion release from metallic nanoparticles on and in a polymer or ceramic matrix as function of the arrangement, composition, and filling factor of the nanoparticles and the properties of the polymer or ceramic matrix have been investigated following changes in particle plasmon resonance and x-ray photoelectron spectroscopy. Emphasis has been placed on pure Ag and combined Ag/Au nanoparticles.