Berlin 2008 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 34: POSTERS Polymerphysics
CPP 34.36: Poster
Donnerstag, 28. Februar 2008, 17:00–19:30, Poster A
Crystallization Kinetics in Nanocomposites of Semicrystalline Polymers — •Andreas Wurm1, Alexander Minakov1, Dirk Lellinger2, Tetyana Skipa2, Ingo Alig2, Petra Pötschke3, and Christoph Schick1 — 1University of Rostock, Institute of Physics, Polymerphysics, 18051 Rostock, Germany — 2Deutsches Kunststoff-Institut, Schloßgartenstr. 6, 64289 Darmstadt, Germany — 3Leibniz Institute of Polymer Research, Hohe Str. 6, 01069 Dresden, Germany
In order to understand the nucleation and crystallization in CNTpolymer composites simultaneous experiments with a combination of different methods are extremely useful. As an important supplement to the classical techniques for crystallization (SAXS/WAXS or DSC), measurements of the AC conductivity and permittivity are of interest for CNT-polymer composites. These experiments allow the investigation of the changes in the conductive percolation structure by crystallization. Two effects are expected to influence conductivity and dielectric properties: (i) crystallisation near the CNT and at the CNT-polymer-CNT contacts and (ii) crystallization in the bulk. Therefore a microcalorimeter was designed, which allows to measure thermal properties like heat capacity and thermal conductivity, which can be used in a X-ray beam of a synchrotron, where simultaneously SAXS and WAXS patterns on the same sample volume can be recorded. On the other hand the microcalorimeter was extended for additional dielectric relaxation spectroscopy, again at the same time on the same sample volume.