Layer-by-layer assembled graphene oxide films and barrier properties of thermally reduced graphene oxide membranes

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 14권 / 4호
ㆍ저자명 : Seon-Guk Kim, Ok-Kyung Park, Joong Hee Lee, Bon-Cheol Ku

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions

영어 초록

In this study, we present a facile method of fabricating graphene oxide (GO) films on the
surface of polyimide (PI) via layer-by-layer (LBL) assembly of charged GO. The positively
charged amino-phenyl functionalized GO (APGO) is alternatively complexed with the negatively
charged GO through an electrostatic LBL assembly process. Furthermore, we investigated
the water vapor transmission rate and oxygen transmission rate of the prepared (reduced
GO [rGO]/rAPGO)10 deposited PI film (rGO/rAPGO/PI) and pure PI film. The water vapor
transmission rate of the GO and APGO-coated PI composite film was increased due to the
intrinsically hydrophilic property of the charged composite films. However, the oxygen transmission
rate was decreased from 220 to 78 cm3/m2·day·atm, due to the barrier effect of the
graphene films on the PI surface. Since the proposed method allows for large-scale production
of graphene films, it is considered to have potential for utilization in various applications.

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