Berlin 2015 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 43: P8: Nanoparticles and Compsite Materials
CPP 43.19: Poster
Mittwoch, 18. März 2015, 10:00–13:00, Poster A
Modeling of the phase separation behavior of nanocomposites from blockcopolymers and nanoparticles in thin films - Comparing theoretical and experimental results — •Peter Friedel, Doris Pospiech, Dieter Jehnichen, Astrid Drechsler, Petra Uhlmann, and Andriy Horechyy — Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden
Thin films from nanocomposites containing polymer blends or blockcopolymers and nanoparticles allow manyfold applications in the generation of spezific surface structures with tailormade properties. Theoretically considered, these are three component systems with specific periodic boundary conditions. The resulting three component spinodal hypersurfaces calculated by meanfield calculations makes one able to guess the symmetry of the microphase separated structures and the distribution of the nanoparticles within the thin films. The theoretical results of two different specific copolymer systems should be compared with experimental findings. Firstly, a system containing a fixed bottom PNiPAAM layer including an dense layer of hydrophized Fe3O4 nanoparticles and an additional top layer with different polymers (containing either PMMA, P2VP or PS) was investigated as a example for polymer blend/nanoparticle composite. Secondly, a system with a PMMA-PPMA diblock copolymer including Au nanoparticles or Fe3O4 nanoparticles was investigated as an example for diblock copolymer/nanoparticle composite.