Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster Session 2

CPP 37.61: Poster

Mittwoch, 2. April 2014, 15:00–19:00, P3

Comparison of the metastable and the stable phase of eicosane via thermal analysis. — •Carlo Di Giambattista, Jörg Baller, and Roland Sanctuary — Laboratory for the Physics of Advanced Materials, University of Luxembourg

Upon cooling from the melt eicosane (C₂₀H₄₂) exhibits a transition to a metastable orthorhombic phase (rotator I). This metastable phase was investigated by classic Differential Scanning Calorimetry (DSC) and Temperature Modulated DSC (TMDSC). From these measurements thermodynamic quantities as the latent heat of transition and the frequency dependant complex specific heat capacity could be drawn. These were then compared to the stable reference state (triclinic) in the same temperature region. Additional experimental methods (Polarisation Optical Microscopy, X-Ray Diffraction...) were used to get a systematic insight to the processes at hand.