Dresden 2003 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 2: Colloide, Nanopartikel und Kapseln
CPP 2.4: Vortrag
Montag, 24. März 2003, 11:00–11:15, ZEU/260
Block Copolymer based Nanocomposites: Effect of Dimensionality and Geometry of Filler Particles — •J. S. Gutmann1,2, A. Jain2, Y. Zhang2, C. Garcias2, and U. Wiesner2 — 1Max-Planck-Institut für Polymerforschung, Ackermannweg 10, D-55129 Mainz — 2MSE Dept., Cornell University, Ithaca, NY12485 USA
Polymer composites incorporating nanoparticles have become a new class of composites because of the enhanced properties achieved in these materials due to the structural control in the nanometer range. The field, however, lacks a model system, which can be used to investigate these issues as a function of the dimensionality, size and composition of fillers.
Model nano-objects with spherical, cylindrical and plate-like geometries have been synthesized using a block copolymer templated Sol-Gel synthesis. The system presents a unique advantage in its capability of obtaining different geometries with the same generic material.
Effects on order disorder transition temperatures, viscoelastic properties, phase behaviors and other properties as a function of the geometry and the length scale of the fillers will be discussed.
[1] A. Jain, J. S. Gutmann, et al.: Macromolecules, 35, 4862 (2002). [2]A.C. Balazs: Curr. Op. Coll. & Interf. Sci., 4, 443 (2000).