Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster Session 2

CPP 37.63: Poster

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

Crystallization dynamics of pentanol in silica nanopores — •Daniel Rau, Fabian Schön, and Rolf Pelster — Experimentalphysik, Universität des Saarlandes

We present a dielectric study on the crystallization dynamics of n-pentanol in electrochemical etched porous silica with pore diameters d_P1≈ 7 nm and d_P2≈ 14 nm. On slow continuous cooling(<0.05 K/min), we observed a glass transition instead of crystallization while we find a partial recrystallization upon reheating. This behaviour reflects the different temperature dependences of nucleation and crystal growth. In addition, we studied the crystallization dynamics under isothermal conditions after quenching(≈ 2 K/min) the sample. It is seen that there is a maximum of the crystallization rate far below the bulk melting point.