Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 48: Poster: Polymer Crystallization, Nucleation and Selfassembly

CPP 48.6: Poster

Mittwoch, 22. März 2017, 18:30–21:00, P2-OG1

Crystallization of polymers studied by combining AFM and fast scanning calorimetry — •Rui Zhang, Evegny Zhuravlev, and Christoph Schick — Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany and Competence Centre CALOR, Faculty of Interdisciplinary Research, University of Rostock, Albert-Einstein-Str. 25, 18051 Rostock, Germany

Atomic force microscopy (AFM) can show morphology of polymers at the early stages of crystallization (structures on a 100 nanometer scale). In combination with fast scanning calorimetry (FSC), AFM can detect polymer crystallization after fast quenches and after short annealing (sub second). The calorimetric chip sensor is mounted on the AFM and the fast scanning calorimetric measurements are possible without touching the sensor. This way a repeated heat treatment of the sample is possible and the formed structures are accessible for the AFM at room temperature if the glass transition temperature of the polymer is above room temperature. The primary results show morphologies after deep quenches in the homogeneous nucleation domain and for low supercooling in the heterogeneous nucleation domain. The spherulitic growth rates at high temperatures have been determined, which are faster than POM's data given by others.

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