| 초록 |
Graphene oxide (GO) can exhibit interesting liquid crystallinity in aqueous solution, providing potential applications in material science. While polymer can be often added to enhance the physical properties of the GO, there is a lack of understanding how polymers changes the structure of the GOs in solution. When GOs are added as an effective nanofiller in polymer matrix, GO can enhance the polymer crystallization, reducing the nucleation barrier due to the large surface area of GO. However, the effect of polymer crystallizations on the structure of GO has not been fully investigated yet. In this study, we show the liquid crystallinity of GO in dense polymer solutions can be altered by the polymer crystallizations. For example, chain alignment during the crystallization affects the GO-GO interactions thus changing its liquid crystallinity. Polarized optical microscopy, wide-angle x-ray scattering and small-angle x-ray scattering were employed to investigate the GO structures. |
