Preparation and Properties of Reduced Graphene Oxide-Chitosan Composite Film

In order to study the effect of reduced graphene oxide (RGO) on the properties of chitosan (CS) films, graphite oxide and CS were used as raw materials to prepare reduced graphene oxide-chitosan film (RGO-CS) by ultrasonic dispersion and vacuum induced self-assembly and various properties of the film was characterized in this paper. In addition, CS and RGO were used as surface sizing agents to study the effects on the water resistance of corrugated paper. The results showed that: the RGO-CS film was successfully prepared. SEM images revealed the surface of the RGO-CS film was flat and smooth. Besides, GO-CS composite film had the highest resistivity, reaching 17310 mΩ-cm, while resistivity of the RGO-CS film is only about 52.7 mΩ-cm. Using RGO-CS and RGO as additives to coat corrugated paper, compared with the blank sample, it was found that the water resistance was significantly improved. The sizing degree reached 78 s and 74 s, and the maximum contact angle reached 112° and 110°, respectively.