Regensburg 2007 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 9: POSTER: Colloids and Nanoparticles
CPP 9.19: Poster
Monday, March 26, 2007, 16:00–18:00, Poster B
Macroscopically Thick Silica-Rubber Systems Investigated using GISAXS — •Tobias Pöpperl1, Gerald Johannes Schneider1, Peter Müller-Buschbaum2, and Dietmar Göritz1 — 1Institut für Physik, Universität Regensburg, 93040 Regensburg — 2Physik Department LS E13, TU München
The mechanical properties of filler-rubber systems, with fillers such as e.g. silica, are mainly determined by the filler. In general silica can be interpreted as a fractal object with a hierarchical structure - with structure sizes ranging from nanometers up to several micrometers.
Established methods like Small Angle X-ray Scattering (SAXS) and Ultra Small Angle X-ray Scattering (USAXS) techniques are highly useful for investigating such systems, but cover only structure sizes smaller than one micrometer. Therefore, it is of interest to apply additional methods to expand the accessible range. Originally developed to investigate surface structures of thin films, the powerful technique of Grazing Incidence Small Angle X-ray Scattering (GISAXS) is such a method. It covers the range of a few nanometers up to several micrometers. For the first time GISAXS was used to investigate the morphology of silica dispersed in macroscopically thick rubber and the results are presented.