| 초록 |
In order to derive the desired properties of polymer nanocomposites, it is imperative to allow dispersion of nanoparticles within the polymeric system by inducing proper interfacial bonding between the nanoparticles and polymers. Therefore, a detailed understanding of nanoscale structures focused on particle dispersion and phase behavior is paramount to the successful fabrication of polymer nanocomposites. However, mechanisms of controlling the state of particle dispersion in novel nanocomposites remain elusive. In this regard, we have done extensive studies on the characterization of these systems using small-angle scattering techniques. One significant result is that particles might not reach in equilibrium in a given reasonable time depending on particle/polymer size and processing conditions. In this talk, we show non-equilibrium effect of particle dispersion based on the polymer molecular weight change is crutial determning the material property. |
