Molecular theories of polymer nanocomposites

Lisa M. Hall, Arthi Jayaraman, Kenneth S. Schweizer

Research output: Contribution to journalArticle

Abstract

Significant progress towards the development of microscopic predictive theories of the equilibrium structure, polymer-mediated interactions, and phase behavior of polymer nanocomposites has been made recently based on liquid state integral equation, density functional, and self-consistent mean field approaches. The basics of these three theoretical frameworks are summarized, and selected highlights of their recent applications discussed for spherical, nonspherical, and polymer-grafted nanoparticles dissolved in athermal and adsorbing concentrated solutions and homopolymer melts. The role of nanoparticle size, volume fraction, and interfacial cohesive interactions is emphasized, especially with regards to their influence on filler dispersion and spatial ordering via entropic depletion attraction, polymer adsorption-mediated steric stabilization, and local bridging of nanoparticles. Some of the many remaining theoretical challenges and open fundamental questions are summarized.

Original languageEnglish (US)
Pages (from-to)38-48
Number of pages11
JournalCurrent Opinion in Solid State and Materials Science
Volume14
Issue number2
DOIs
StatePublished - Apr 1 2010

Keywords

  • Bridging
  • Density functional theory
  • Depletion
  • Dispersion
  • Integral equation theory
  • Polymer-grafted particles
  • Polymer-particle mixtures
  • Potential-of-mean force
  • Steric stabilization

ASJC Scopus subject areas

  • Materials Science(all)

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