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PLV: Plenarvorträge

PLV X

PLV X: Plenarvortrag

Donnerstag, 20. März 2025, 14:00–14:45, H2

Process-directed formation of nonequilibrium structures in copolymer materials — •Marcus Müller — Georg-August-Universität, Göttingen, Germany

Macromolecular systems often become trapped in metastable structures rather than reaching true equilibrium, offering opportunities to fabricate structures with unique properties. Process-directed structure formation refers to reproducibly trapping the kinetics of structure transformation into a desired (meta)stable target structure after a quench of the thermodynamic state, such as solvent evaporation or light-stimulated chemical conversions. This strategy leverages several unique advantages of copolymer systems, including a comprehensive knowledge of equilibrium properties and a clear separation of timescales between the quench of thermodynamic variables, the system's spontaneous relaxation toward the nearest metastable structure, and its thermally activated escape toward equilibrium. Both highly coarse-grained particle-based and continuum models will be discussed, highlighting challenges for quantitatively predicting copolymer material processing at the molecular scale.

Keywords: polymer; nonequilibrium structures; structure transformation; simulation; processing