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CPP: Chemische Physik und Polymerphysik
CPP 29: POSTER: Polymer physics
CPP 29.30: Poster
Tuesday, March 8, 2005, 16:30–18:30, Poster TU D
Unexpected mechanical properties in reactiv polymer nanocomposites as seen by Brillouin spectroscopy — •R. Bactavatchalou1,2,3,4, C. Gilow1,2, J. Baller1,3, R. Sanctuary1,3, D. Rouxel1,4, W. Possart 2, and J.K. Krüger1,2,3,4 — 1Laboratoire Européen de Recherche Universitaire Saarland-Lorraine (LERUSL) — 2Universität des Saarlandes, Saarbrücken, Germany — 3Université du Luxembourg, Luxembourg — 4Université de Nancy I, France
The mechanical properties of polymers can strongly be modified by filling the polymer with nanoparticles of different materials. In reactiv polymer systems, the nanoparticles are present during the polymerisation and due to their big surface, they can cause by surface catalytic reactions additionnal morphologies. These specific interactions between nanoparticles and the matrix may cause great modifications of the phenomological properties of the nanocomposites. For example, the impact resistance and the elastic modulus can increase simultaneously, whereas normally these physical quantities evolve in opposite directions. The mechanical investigations are performed with Brillouin spectroscopy, which is of special interest because the involved acoustic wavelenght may become of the order of the interparticle distance.