| 초록 |
Graphene has been recognized as an emerging new class of nanofiller for improving the mechanical, thermal and electrical properties of polymers even at very low loadings. In this study, PEG-functionalized graphene nanosheet (PEG-GN) was prepared by the reaction of graphene oxide with poly(ethylene glycol) (MW =2,000) having azide as a terminal end group and a simultaneous thermal reduction. And, small amount of the PEG-GN (less than 1.0 wt%) was incorporated into poly(ethylene oxide) (PEO) by solution blending. The morphology, thermal and mechanical properties of the PEO/modified GO nanocomposites were characterized by FE-SEM, DSC, DMA and tensile testing, respectively. The results revealed that there are great enhancements in mechanical properties in the PEO/PEG-GN nanocomposites without loss in elongation-at-break. Further, it can be seen that the PEG-GN acts as a nucleating agent for the PEO. |
