| 초록 |
Studies on dynamics of polymer composites can provide to the enhancement of polymer’s physical properties. In this work, we investigated how the behavior of polymer melts changes depending on the state of the surface wall from diffusion and dewetting dynamics. First, we used attractive wall (Graphene Oxide, GO) samples and repulsive wall (Polystyrene, PS) samples a model composite system on diffusion. Polymer mobility of confined systems was analyzed a neutron reflectivity technique(NR). Consequently, in case of diffusion, when the film is thin, diffusion coefficient decreases for polymethylmethacrylate (PMMA) thin films sandwiched between wrinkled GO (wrGO) sheets and increases between PS layers. In addition dewetting dynamics polymer thin films on wrGO monolayer posited the PMMA/Si interface has been studied. Dewetting prevented by wrGO from the neutron NR. The increase of interfacial roughness by adding the wrGO effects inhibited dewetting as the wettability of GO were maximized. |
