Dresden 2014 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session 2
CPP 37.49: Poster
Mittwoch, 2. April 2014, 15:00–19:00, P3
Nanoparticle distribution and domain orientation in nanoparticle / block copolymer composite thin films — •Andriy Horechyy1, Bhanu Nandan2, Dieter Jehnichen1, Michael Göbel1, Manfred Stamm1,3, and Doris Pospiech1 — 1Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany — 2Department of Textile Technology, Indian Institute of Technology Delhi, New Delhi, India — 3Technische Universität Dresden, Physical Chemistry of Polymer Materials, Dresden, Germany
Block copolymers (BCP) which microphase separate into various morphologies, are widely used as templates for organizing nanoparticles (NP) into 1D, 2D and 3D-periodic structures. In NP/BCP thin films the thermodynamics that governs the BCP morphology becomes more complex as compared to the bulk, mainly due to the interfacial effects that occur at polymer/substrate and/or polymer/air interface.
In this work we studied and compared the effects of chemical composition of BCP on distribution and lateral arrangement of nanoparticles dispersed in BCP thin films, and influence of such nanoparticle-associated effects on the orientation of BCP domains. By changing the chemical composition of BCP constituents, different lateral and orthogonal distributions of nanoparticles are realized. Presence of nanoparticles at polymer/substrate or polymer/air interface changes the effective surface energy and promotes domain re-orientation regardless of whether selective or non-selective NP/polymer interactions are involved. We acknowledge funding by Deutsche Forschungs-Gemeinschaft (DFG).