Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 10: Crystallization, Nucleation and Self-assembly I

CPP 10.5: Vortrag

Montag, 1. April 2019, 16:15–16:30, H13

Polymorphism and crystal stability of syndiotactic polystyrene from multiscale simulations — •Chan Liu, Kurt Kremer, and Tristan Bereau — Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

Syndiotactic polystyrene (sPS) exhibits complex polymorphic behavior upon crystallization. Computational modeling of polymer crystallization has remained a challenging task because the relevant processes are slow on the molecular time scale. In previous work, we have found that our coarse-grained (CG) model of sPS significantly speed up the simulations, while stabilizing the main polymorphs α and β, observed experimentally. However, to study the stability of polymorphs, we require reasonably larger system and more advanced enhanced-sampling methods, such as Metadynamics. Furthermore, we rely on Markov state models to gain insight into the kinetics of interconversion between polymorphs and to verify the convergence of Metadynamics.

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