Regensburg 2013 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 8: Poster I: Glasses and Glass Transition (joint session DY/DF/CPP)

DY 8.2: Poster

Montag, 11. März 2013, 17:30–19:30, Poster C

Nanoscale confinement of a low molecular weight liquid — •Anna Djemour, Jörg Baller, Carlo Di Giambattista, Marlena Filimon, Jens-Peter Bick, Andreas Michels, and Roland Sanctuary — Laboratory for the Physics of Advanced Materials, University of Luxembourg, 162A, Avenue de la Faiencerie, L-1511 Luxembourg

The enormous change of the molecular dynamics of glass formers when approaching the thermal glass transition temperature is usually attributed to the increase of the size of cooperative rearranging regions (CRR). Spatial confinement is known to take influence on the glass transition behaviour when the scale of confinement is in the same order as the size of the CRRs. In this work we present investigations of the glass transition of a low molecular weight epoxy resin (Diglycidil Ether of Bisphenol A, DGEBA) filled in different nanoporous silica glasses. The effect of confinement is studied by two different ways: i) properties of the glass former are investigated by modulated calorimetry, dielectric spectroscopy and X-ray scattering. ii) properties of the whole system, i.e. porous glasses filled with the glass former are investigated by thermo-mechanical analysis and dynamic mechanical analysis. Combining the results from both approaches contributes to the understanding of the glass former DGEBA under confinement.