Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 1: Nanoparticles and Composite Materials I
CPP 1.4: Vortrag
Montag, 11. März 2013, 10:30–10:45, H34
Structural investigation of polymer-metal nanocomposite films using time-of-flight grazing incidence small angle neutron scattering — •Yuan Yao1, Ezzeldin Metwalli1, Jean-Francois Moulin2, Martin Haese-Seiller2, and Peter Müller-Buschbaum1 — 1TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany — 2HZ Geesthacht at FRM II, Lichtenbergstr.1, 85748 Garching, Germany
Soft polymer films with embedded magnetic nanoparticles have attracted immense interest for wide potential applications in functional nano-devices. Well-aligned highly-oriented hybrid films of polystyrene(deuterated)-block-polybuthyl methacrylate symmetric block copolymer are used to guide polystyrene grafted maghemite nanoparticles within the polymer matrix. Parallel and perpendicular lamella structured films, embedded with different nanoparticles concentrations (from 0 up to 15 wt%), are prepared by spin coating process. Both surface and buried structural information of the metal-polymer hybrid film are gained using TOF-GISANS. The nanoparticles are positioned in one polymer domain and a distortion of the lamella structure evolves with increasing nanoparticle concentration. The nanoparticles arrangement and possible particle assemblies within the polymer matrix is influenced by the lamella orientation.