Dresden 2009 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 10: Polymer Physics I

CPP 10.4: Vortrag

Montag, 23. März 2009, 18:45–19:00, ZEU 114

Curing of epoxy-based nanocomposites: Influence of the nanoparticles and their surface coating — •Jörg Baller, Markus Ziehmer, Matthieu Thomassey, Bartosz Zielinski, Martine Philipp, Ulrich Müller, Jan Kristian Krüger, and Roland Sanctuary — Université du Luxembourg, Laboratory of Physics of Condensed Matter and Advanced Materials (LPM), 162a, avenue de la Faïencerie, L-1511 Luxembourg

Interaction between inorganic filler particles and polymer matrix in epoxy-based nanocomposites mainly takes place at the giant surface of the nanoparticles. Often these surfaces are coated with a hydrophobic layer e.g. to avoid aggregation of nanoparticles. This coating can dominate the interaction between polymer matrix and dispersed nanoparticles. There are quite a lot of possible interactions imaginable. They range from chemical interactions like catalysis of the epoxy curing by the nanoparticles to physical interactions which may e. g. influence the thermodynamic miscibility of different components constituting the epoxy network. Comparing nanocomposites with coated silica and uncoated alumina particles delivers insight into the manifoldness of possible interactions. Thermal, rheological and spectroscopic methods are used to determine the evolution of physical properties before, during and after cure of epoxy nanocomposites.