| 초록 |
Silica/polyaniline (PANI) core-shell microspheres were synthesized by PANI coating on the surface of 1 μm silica microbeads, then applied as a candidate of inorganic/polymer composite based electrorheological (ER) materials. Initially, the silica microbeads were modified by N-[(3-trimethoxysilyl)-propyl] aniline to activate an aniline functional group on the surface of silica for PANI coating. The morphology of PANI coating on the surface of silica was observed by scanning electron microscope and silica/PANI core-shell structure was confirmed by transmission electron microscopy. ER properties of both silica and silica/PANI based ER fluids were measured by a rotational rheometer. Compared with ER properties of silica-based fluid, those of silica/PANI-based fluid were increased dramatically despite of very thin PANI coating on the surface of silica. |
