| 초록 |
Carbon-based nanofiller composites have widely been used for achieving improved thermal, mechanical and electrical properties, but it is often difficult to achieve proper properties along a desired direction because fillers are commonly aligned to the processing direction. In this study, we used a directional cooling crystallization method as a fabrication process of polymer matrix having aligned pores. The pores having unique morphologies were then used for the impregnation of nanofillers. After a subsequent impregnation method using the self-assembly of graphene sheets on the wall surfaces of highly aligned pores, we could produce anisotropic graphene/polymer composite materials. The key achievement of this method is that we can control the directionality of thermal and electrical properties in the aligned pore direction of matrix. The major electron pathway was successfully aligned following the pore direction with the coated graphene on the pore wall, while pores are playing a role of blocking electron transfer. |
