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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 21: Polymer dynamics

CPP 21.10: Vortrag

Dienstag, 17. März 2015, 12:00–12:15, C 264

Bottlebrush melts — •Jaroslaw Paturej^1,2, Sergei Sheiko³, and Michael Rubinstein³ — ¹Leibniz-Institut of Polymer Research, Dresden, Germany — ²Institute of Physics, University of Szczecin, Szczecin, Poland — ³Department of Chemistry, University of North Carolina, Chapel Hil, NC, USA

A bottlebrush polymer is a branched macromolecule composed of a linear chain (backbone) with sidechains densely tethered to it. High grafting density of side chains gives rise to various unique structural properties, such as highly extended conformations of their backbones and tunable character of their stiffness and rheological properties with degree of polymerization of the side chains. We conducted coarse-grained molecular dynamics simulations to determine how the number of Kuhn segments in a bottlebrush backbone L and in the sidechains N affect size, stiffness, and structure of these molecules. We found that the size (mean-squared radius of gyration and end-to-end distance) and persistence length of bottlebrushes in a melt state scales as N^1/2.