Particle Dynamics within Self-Assembling Polymer-Grafted Spherical Nanoparticles

ORAL

Abstract

We have recently shown that the self-assembly of polymer grafted spherical nanoparticles can be achieved by varying the brush grafting density and chain length. The mechanical behavior of these nanocomposites with various states of particle dispersion has been explored using x-ray photon correlation spectroscopy. Nanoscale and macroscopic dynamic measurements show that mechanical reinforcement results from the percolated and also strongly entangled brushes forming strong networks. Particle dynamics within various polymeric nanostructures will be discussed.

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Authors

  • Pinar Akcora

    Department of Chemical Engineering, University of Missouri, Columbia, MO, University of Missouri

  • Sanat K. Kumar

    Columbia University, Department of Chemical Engineering, Columbia University, New York, NY

  • Yu Li

    University of South Carolina

  • Brian Benicewicz

    University of South Carolina

  • S. Narayanan

    Argonne National Laboratory, Argonne National Laboratories, X-ray Science Division, Argonne National Lab, ANL-APS