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

So Youn Kim, Kenneth S. Schweizer, Charles F. Zukoski
2011 Physical Review Letters  
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
more » ... ness, and high sensitivity of the nanocomposite bulk modulus to interfacial cohesion.
doi:10.1103/physrevlett.107.225504 pmid:22182034 fatcat:nqzn6cgr5na4lmpo5l2pd7mwea