Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 13: Poster: Nanoparticles, Nanocrystals and Composites

CPP 13.3: Poster

Montag, 7. März 2016, 18:15–21:00, Poster B2

Printed nanostructured block-copolymer/metal-oxide hybrid films — •Senlin Xia, Ezzeldin Metwalli, Yuan Yao, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany

Metal-polymer nanocomposites are important hybrid materials due to their interesting applications, e.g. catalysts, sensors, and memory devices. Owing to the potential of high mass production and energy saving, printing techniques were utilized to prepare hybrid films composed of magnetite nanoparticles (NPs) and PS-b-PMMA diblock copolymer (DBC). Different external magnetic fields were applied during the printing process to guide the NPs within the polymer matrix. The mesoscopic structure of PS-coated maghemite NPs within the DBC films was investigated as a function of the NP concentration using optical microscopy, AFM, SEM and GISAXS. The PS-coated NPs were selectively dispersed in the PS domains of the parallel lamella NP-DBC hybrid films. At high NP concentrations, the coalescence of NPs into large micro-sized metal-oxide wires was observed. The superparamagnetic behavior of the hybrid film was proved using a superconducting quantum interference device magnetometer.