| 초록 |
Abstract: The physical properties of functionalized graphene sheet (FGS)/poly(ethylene-co-vinyl acetate) (EVA) was examined with various kinds of EVA, having the vinyl acetate (VA) content in the range from 1 to 40 wt%. The compatibility between FGS and EVA was enhanced as the polar VA content in EVA was increased. Thus the dispersion of FGS in EVA became finer, and the decrease of surface resistivity and the increase of tensile modulus by the added FGS were more effective when the VA content in EVA was high. When the VA content was low, the elongation at break reduced drastically by added FGS due to the poor adhesion at FGS/EVA interface. The crystallization of EVA was generally retarded by the interaction with dispersed FGS. However, when both the VA content in EVA and the added amount of FGS were low, the crystallization of EVA was enhanced, probably due to the predominant nucleating effect by the FGS. |
