Regensburg 2007 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 9: POSTER: Colloids and Nanoparticles
CPP 9.22: Poster
Montag, 26. März 2007, 16:00–18:00, Poster B
Dependence of the Structure of Carbon Black on its Concentration — •Tobias Sonnleitner, Tobias Pöpperl, Gerald Johannes Schneider, and Dietmar Göritz — Institut für Physik, Universität Regensburg, 93040 Regensburg
The properties of polymer carbon black compounds strongly depend on the nano scale structure of carbon black. Preliminary experiments showed that for the purpose of investigating the detailed surface structure of nanoparticles small angle x-ray scattering (SAXS) and ultra small angle X-ray scattering (USAXS) are very suitable. The accessible length scales ranges from dmin = 5 nm to dmax = 650 nm. In this work we investigated samples of furnace carbon black N356, dispersed in a SBR 1500 matrix. We used filler contents ranging from 9 to 22 percent in volume. The results prove that there are no changes in the overall surface structure due to the filler degree. In the regime of larger length scales one finds a correlation between the mass fractal dimenson and the filler loading of N356: The mass fractal dimension of the aggregates is reduced if the filling degree is increased.