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Kim, So Youn
Laboratory for Soft Materials Nanophysics
Research Interests
  • Colloids, particle dispersions, polymer nanocomposite, block copolymers

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Multiscale Structure, Interfacial Cohesion, Adsorbed Layers, and Thermodynamics in Dense Polymer-Nanoparticle Mixtures

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Title
Multiscale Structure, Interfacial Cohesion, Adsorbed Layers, and Thermodynamics in Dense Polymer-Nanoparticle Mixtures
Other Titles
Multiscale Structure, Interfacial Cohesion, Adsorbed Layers, and Thermodynamics in Dense Polymer-Nanoparticle Mixtures
Author
Kim, So YounSchweizer, Kenneth S.Zukoski, Charles F.
Keywords
SCATTERING; AGGREGATION
Issue Date
2011-11
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.107, no.22, pp.225504 -
Abstract
We establish the existence and size of adsorbed polymer layers in miscible dense nanocomposites and their consequences on microstructure and the bulk modulus. Using contrast-matching small-angle neutron scattering to characterize all partial collective structure factors of polymers, particles, and their interface, we demonstrate qualitative failure of the random phase approximation, accuracy of the polymer reference site interaction model theory, ability to deduce the adsorbed polymer layer thickness, and high sensitivity of the nanocomposite bulk modulus to interfacial cohesion
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DOI
10.1103/PhysRevLett.107.225504
ISSN
0031-9007
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ECHE_Journal Papers
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