| 초록 |
Gas barrier property is one of the most important issue not only packaging system but also electronic devices because oxygen and/or moisture could change mechanical, electronic, and thermal properties of device. We successfully fabricated oxygen barrier film with graphene oxide (GO) and cellulose nanofibers (CNFs) composite by bar-coating on PET film. The addition of CNFs does not have significant effect on oxygen transmittance rate (OTR) of GO and it seems that CNFs do not disturb stacked structure of GO. However, supplement of CNFs increased adhesion property of GO to PET film and made GO/CNFs coating stable after film folded. Raman spectra and XRD pattern demonstrated the effect of CNFs on GO structure. Also, SEM images showed that GO surface incorporated CNFs changed its wrinkle structure. We expect this thin film can be used for OLED oxygen barrier film. |
