Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 31: New Materials

CPP 31.2: Vortrag

Freitag, 30. März 2007, 10:45–11:00, H40

Investigation of structures in diblock copolymer film containing magnetic nanoparticles — •M. M. ABUL KASHEM1, J. PERLICH1, L. SCHULZ1, S. V. ROTH2, and P. MÜLLER-BUSCHBAUM11TU München, Physik-Department LS E13, James-Franck-Str. 1, 85747 Garching, Germany — 2HASYLAB at DESY, Notkestr. 85, 22603 Hamburg, Germany

Nanocomposite materials based on polymeric matrix and inorganic fillers having desired mechanical, electrical and thermal properties have been being reported since long. Rendering magnetic properties to the polymer by using magnetic nanoparticles is a rather new idea. We have investigated the nanostructures supported by superstructures formed in ultra thin films of such a new type of nanocomposite materials. The system is a diblock copolymer p(styrene-block-isoprene) matrix with embedded magnetic nanoparticles (metal oxide) covered with polymeric (PS) hairs. The superstructure is formed due to dewetting of the polymer film and the nanostructure due to self-assembly of diblock copolymer. We were able to produce dewetted structures containing magnetic nanoparticles. The nanoparticles retard the dewetting process and control the orientation from a perpendicular to a parallel lamella. Moreover, roughness correlation between the substrate and the film surface has been observed at different film thicknesses resulting from gradient sample. The investigation has been carried out by atomic force microscopy (AFM) in non-contact mode and by using micro-beam grazing incident small angle X-ray scattering (μGISAXS).

Funding by the CompInt network is acknowledged.

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