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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 36: Poster: Nanoparticles and Composite Materials

CPP 36.2: Poster

Mittwoch, 24. März 2010, 17:30–19:00, Poster B2

Conformation and Dynamics of Poly-ethylene-propylene in polymer-silica nano composites — •Klaus Nusser^1,2, Susanne Neueder^1,2, Gerald Johannes Schneider², Wim Pyckhout-Hintzen¹, Lutz Willner¹, Aurel Radulescu², Vitaly Pipich², Olaf Holderer², Peter Falus³, and Dieter Richter¹ — ¹IFF, Forschungszentrum Jülich GmbH, 52425 Jülich — ²Jülich Centre for Neutron Science at FRM2, 85747 Garching — ³IN 15, Institute Laue Langevin, 38000 Grenoble

Elastomer filler nano composites are widely used in everyday life. Especially the reinforcement of mechanical properties has been applied for a long time in rubber products. The microscopic mechanisms underlying the macroscopic property changes, however, have not been experimentally clarified yet.

We chose a bottom-up approach to gain more microscopic insight into these mechanisms, starting with a simple model system. The polymer component of the composite material was chosen to be polyethylene-propylene, the filler component silica.

Samples with different volume percent silica in the polymer matrix were investigated by means of Small Angle Neutron Scattering, yielding first insight into the microscopic structure of the polymer chains in the presence of the filler particles. The segmental dynamics was probed by means of Neutron Spin Echo spectroscopy.