Regensburg 2010 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 34: Poster: Elastomers and Gels
CPP 34.1: Poster
Mittwoch, 24. März 2010, 17:30–19:00, Poster C
4-arm Star Polymer Networks — •Konrad Schwenke1,2, Michael Lang1, and Jens-Uwe Sommer1,2 — 1Leibniz-Institut für Polymerforschung Dresden, Hohe Straße 6, 01069 Dresden, Germany — 2Institute for Theoretical Physics, TU Dresden, 01069 Dresden, Germany
We simulate solutions of 4-arm star polymers with stars of two different types A and B with the help of the Bond Fluctuation Model. We use these solutions to construct networks out of the stars where only types A and B are allowed to react with each other. It is investigated how the properties of the star polymer networks depend on the initial polymer concentration and on the size of the stars. One property that we focus on is the ratio of defects in the network, where we see a strong concentration dependence. This system also serves as a model for networks obtained from non-linear precursors. Our work is motivated by experimental results of Sakai et al [1] who synthesized this novel kind of network which resulted in particular homogeneous model-like network structures.
[1] Sakai et al, Macromolecules 2008 41 (14), 5379-5384