Dresden 2026 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 59: Crystallization
CPP 59.1: Talk
Friday, March 13, 2026, 11:30–11:45, ZEU/0260
Structure formation in Polyamide 6 under process-relevant conditions: In situ SAXS/WAXS study using a modular FlowCell setup — •Anna Katharina Sambale1, Eric Euchler1, Moritz Kurkowski1, Enno Henn1, Regine Boldt1, Matthias Schwartzkopf2, Sarathlal Koyiloth Vayalil2, 3, and Markus Stommel1, 4 — 1Leibniz-Institut fuer Polymerforschung Dresden e.V., Dresden, Germany — 2Deutsches Elektronen Synchrotron DESY, Hamburg, Germany — 3Applied Science Cluster, UPES, Dehradun, India — 4TUD Dresden University of Technology, Dresden, Germany
The microstructural evolution of semi-crystalline thermoplastics during melt processing is governed by local thermo-rheological conditions, which strongly influence crystallization kinetics and consequently, the final material properties. To analyze these interdependencies under process-relevant conditions, a modular FlowCell setup was developed for time-resolved in situ SAXS/WAXS experiments at the synchrotron beamline P03 at DESY, Hamburg. The setup combines a commercial single-screw extruder with customized temperature-controlled slit capillary that enables measurements during controlled cooling from the melt to solid state, with synchronized acquisition of IR-thermography data and, in extended configurations, Raman spectroscopy. Recent experiments on polyamide 6 demonstrate the impact of different cooling strategies and nucleation conditions on the resulting structure. The results highlight the relevance of spatially and temporally resolved analysis techniques for understanding structure formation towards industrial polymer processing.
Keywords: polymer processing; polymorphic thermoplastics; in situ structure formation; X-ray scattering; crystallization kinetics