Dresden 2006 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 11: POSTER Disperse Polymer Systems

CPP 11.24: Poster

Tuesday, March 28, 2006, 17:00–19:00, P3

Investigation on the Molecular Mobility and Gas Transport Properties of Polymer/POSS Hybrid Materials — •Ning Hao, Martin Böhning, Ole Hölck, Harald Goering, and Andreas Schönhals — Bundesanstalt für Materialforschung, Unter den Eichen 87, D-12205 Berlin

Polymer based hybrid materials are prepared by blending polyhedral oligomeric silsesquioxanes (POSS) into different polymer matrices via a solution / film casting route. POSS can be regarded as a molecular silica nanoparticle. The property structure relationships of these nanocomposites are investigated by dielectric spectroscopy and gas transport measurements. As a main result POSS can be mixed homogeneously on a molecular level into the polymer matrix up to a limited concentration which depends on the organic substituents of the POSS component and the polymer matrix as well. For higher concentrations of POSS a phase separated structure with a POSS rich phase is observed. This structure influences strongly the gas transport properties of the nanocomposite materials