Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 18: Poster: Colloids and Complex Fluids
CPP 18.1: Poster
Montag, 20. März 2017, 18:30–21:00, P1C
Entropic interactions between dendrimers and linear chains in solution — •Martin Wengenmayr1,2, Ron Dockhorn1,2, and Jens-Uwe Sommer1,2 — 1Leibniz-Institut für Polymerforschung Dresden, Germany — 2Technische Universität Dresden, Germany
Entropic interactions between soft objects are not fully understood. In particular, branched polymers immersed in a melt of linear chains might segregate even without repulsive interactions between the polymers. To study these effecs for a well defined system, we investigate the conformational properties of dendrimers immersed in dilute to highly concentrated polymer solutions of linear chains. A mean-field theory and large scale computer simulations utilizing the bond fluctuation model are applied to identify the solution properties and repulsive interactions between solvent and dendrimer. The free energy landscape is evaluated applying the Umbrella Monte Carlo sampling methode. Our study shows that the interactions between linear polymer solution and dendrimer depend essentially on the dendrimer generation and on the polymer concentration.