▎ 摘　　要

Modified graphene oxide (GO) not only offers a wrinkled structure but may also transform the crystal structure, giving it a potential application in high performance polymer/filler composites. In this work, alkylated graphene oxide (GO-ODA) is obtained via mutual electrostatic interaction between the epoxide group of GO and the amine group of octadecylamine (ODA). Then nanocomposites are obtained via introducing different contents of GO-ODA to poly(4-methy-1-pentene) (PMP or TPX) using a solution approach. It is found that the obtained GO-ODA has no effect on the crystallinity of TPX. It is worth noting that GO-ODA changes the crystal structure. GO, as a kind of nanofiller, is used to change the crystal structure of polymer/filler composites for the first time, which is an important finding and obviously provides a good example to widen the application of GO.