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CPP: Chemische Physik und Polymerphysik

CPP 9: SYMPOSIUM Disperse Polymer Systems II

CPP 9.3: Vortrag

Dienstag, 28. März 2006, 14:45–15:00, ZEU 160

Structure Property Relationships of Different Polymer Based Nanocomposites — •Andreas Schönhals, Ning Hao, Martin Böhning, and Harald Goering — Bundesanstalt für Materialforschung und prüfung, Unter den Eichen 87, D 12205 Berlin

Polymer based nanocomposites continue to receive tremendous attention for different applications. They show remarkable property improvements (increased tensile properties, decreased gas permeability, decreased solvent uptake, increased thermal stability and flame retardance) when compared to conventionally * scaled composite materials. Different polymer based nanocomposites are prepared where polypropylene, polycarbonate and polystyrene are used as polymer matrices. Montmorillonite clay, silicium carbide, multiwaled carbon nanotubes and polyhedral oligomeric silsesquioxanes (POSS) are used as nanoparticles. The property structure relationships of these nanocomposites are investigated by dielectric spectroscopy and gas transport measurements (permeation, sorption). The results are discussed with regard to the nanofiller dispersion and the phase structure of the nanocomposites. Special attention is paid to characterize the interfacial region between the polymeric matrix and the different nanofillers. This regards also to estimate the length scale of interaction between the nanoparticles and the matrix.