Berlin 2015 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 43: P8: Nanoparticles and Compsite Materials
CPP 43.5: Poster
Mittwoch, 18. März 2015, 10:00–13:00, Poster A
Structure-Property relationships of Nanocomposites Based on Polylactide and Layered Double Hydroxides — •Jing Leng1, De-Yi Wang2, Andreas Thünemann1, Franziska Emmerling1, Andreas Wurm3, Christoph Schick3, and Andreas Schönhals1 — 1BAM Federal Institute for Material Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany — 2IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain — 3University of Rostock, Institute of Physics, Wismarsche Str. 43-45, 18051 Rostock, Germany
Two kinds of Polymer based nanocomposites prepared by melt blending of synthesized NiAl (NiAl-LDH) and MgAl (MgAl-LDH) layered double hydroxides with polylactide (PLA) were investigated by a combination of differential scanning calorimetry (DSC), small- and wide-angle X-ray scattering (SAXS and WAXS) and broadband dielectric spectroscopy (BDS). By detailed colorimetric investigations (stepscan DSC) the rigid amorphous phase due to the both the crystals and the nanoparticles was estimated unambiguously. A higher rigid amorphous fraction (RAF) due to the nanoparticles exists in the case of MgAl-LDH based nanocomposites compared to NiAl-LDH based nanocomposites. The dielectric spectra of the both nanocomposites showed several relaxation processes related to dynamic glass transition and localized fluctuations that were identified and analyzed in detail.