• George H. Heilmeier Faculty Award


    Karen I. Winey received the 2012 George H. Heilmeier Faculty Award for Excellence in Research. The Award lecture and reception took pace on Tuesday, March 13. 2012.

    George H. Heilmeier
  • ACS Macro Letters


    A precise acid copolymer exhibits face-centered cubic symmetry. Buitrago, Opper, et al. ACS Macro Letters 2012.

    ACS Macro Letters
  • Resistive switching


    Resistive switching found in a bulk polymer nanocomposite of silver nanowires and polystyrene. White, Vora, et al. Advanced Functional Materials 2011.

    Resistive switching
  • Dielectric Constant Drives Ionic Aggregation


    Upon heating, the increase in dielectric constant drives ionic aggregation in Cs-neutralized PEO-based ionomers. Wang, Tudryn, et al. JACS 2011.

    Dielectric Constant Drives Ionic Aggregation
  • Molecular Dynamics Simulations


    Molecular dynamics simulations of precise acid copolymers compare favorably with X-ray scattering experiments. Hall, Seitz, et al. JACS 2012.

    Molecular Dynamics Simulations
  • JACS Cover


    Precise ionomers have extremely well-defined morphologies relative to random ionomers, including the first report of an ionomer with cubic symmetry. Seitz, Chan, Opper, et al. JACS 2010.

    JACS Cover
  • Silver Nanowire


    Quantitative agreement between the electrical percolation thresholds determined by simulations and experiments using silver nanowire composites. White, Mutiso, et al. Advanced Functional Materials 2010.

  • Polymer Melt


    Molecular dynamics simulations of a polymer melt surrounding an isolated carbon nanotube show local perturbations although the radius of gyration is unchanged. Karatrantos, et al. Macromolecules 2011.

    Polymer Melt



Karen I. Winey


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Karen I. Winey is Professor and TowerBrook Foundation Faculty Fellow of Materials Science and Engineering at the University of Pennsylvania with a secondary appointment in Chemical and Biomolecular Engineering

Winey’s current interests include both polymer nanocomposites and ion-containing polymers.  In nanocomposites, she designs and fabricates polymer nanocomposites containing carbon nanotubes and metal nanowires with the aim of understanding how to improve their mechanical, thermal, and especially electrical conductivity and resistive switching properties.  Polymer dynamics in the presence of nanoparticles is also an area of interest.  In ion-containing polymers, including block copolymers and polymers with ionic liquids, Winey combines imaging and scattering methods to provide unprecedented insights into their morphologies.  Current efforts focus on correlating nanoscale structures with ion transport properties.  In both areas, she couples experimental studies with simulation and theory, either within her group or with collaborators.

Winey received her B.S. from Cornell University in materials science and engineering and her Ph.D. in polymer science and engineering from the University of Massachusetts, Amherst.  Following a postdoctoral position at AT&T Bell Laboratories, she joined the faculty of the University of Pennsylvania in 1992.  Elected positions include chair of the Polymer Physics Gordon Research Conference (2010) and Chair of the Division of Polymer Physics within the American Physical Society (2013).  She served as an Associate Editor for Macromolecules, the premier journal for polymer science, for four years (7/2010 - 6/2014).  Her honors include Fellow of the American Physical Society (2003), a Special Creativity Award from the National Science Foundation (2009-2011), the George H. Heilmeier Faculty Award for Excellence in Research (2012), and Fellow of the Materials Research Society (2013).