Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: Modelling and Simulation of Soft Matter

CPP 11.5: Vortrag

Montag, 20. März 2017, 16:00–16:15, ZEU 255

Polymer bottlebrushes in solution: A combined theory and simulation study — Jaroslaw Paturej, •Torsten Kreer, and Jens-Uwe Sommer — Leibniz-Institut für Polymerforschung Dresden, Hohe Straße 6, 01069 Dresden

We present a theoretical model for polymer bottlebrushes in solutions, where the branched chain is considered as a sequence of cylindrical blobs. Our approach delivers a consistent description of backbone and side-chain scaling under variation of concentration, providing power-laws in different concentration regimes. Upon increasing concentration, we envision a hierarchical screening: First, there is screening by the cylindrical blobs of different chains. Further increase of the concentration leads to screening inside the overlapping cylinders and, finally, amongst the side chains of different brushes. Our analytical predictions are tested via molecular dynamics simulations, which reveal very good agreement with the theory.