Gas barrier performance of graphene/polymer nanocomposites

Abstract

Abstract:Due to its exceptionally outstanding electrical, mechanical and thermal properties, graphene is being explored for a wide array of applications and has attracted enormous academic and industrial interest.Graphene and its derivatives have also been considered as promising nanoscale fillers in gas barrier application of polymer nanocomposites (PNCs). In this review, recent research and development of the utilization of graphene and its derivatives in the fabrication of nanocomposites with different polymer matrices for barrier application are explored. Most synthesis methods of graphene-based PNCs are covered, including solution and melt mixing, in situ polymerization and layer-by-layer process.Graphene layers in polymer matrix are able to produce a tortuous path which works as a barrier structure for gases. A high tortuosity leads to higher barrier properties and lower permeability of PNCs. The influence of the intrinsic properties of these fillers (graphene and its derivatives) and their state of dispersion in polymer matrix on the gas barrier properties of graphene/PNCs are discussed. Analytical modeling aspects of barrier performance of graphene/PNCs are also reviewed in detail. We also discuss and address some of the work on mixed matrix membranes for gas separation.

Impermeable flexible liquid barrier film for encapsulation of DSSC metal electrodes

“…S11–1 showed 3 wt% iodine from iodolyte and 7 wt% nitrogen from acetonitrile, meaning that the PVA film did not prevent leaking of the iodine electrolyte acetonitrile solution. On the other hand, the PVA/PrGO hybrid film proved to be much more stable than the PVA film17181920. Table of EDX (Supplementary Fig.…”

“…Recently, two-dimensional (2D) graphene oxide (GO) has been introduced as an adhesive gas barrier film (GBF) on a large scale161718192021. However, even though it has good adhesion to Ag metal electrodes, the use of GO by itself as a LBF is insufficient because it does not prevent leaking of the electrolyte onto the metal electrodes.…”

“…Therefore GO has only been used as a gas barrier so far. Hybrid materials like graphene-oxide-based polymer nano-composites (GO–polyvinyl alcohol (PVA) film) have also been introduced as hydrogen gas barriers172223. Polymer nanocomposites with graphene have been studied to obtain polymeric gas barrier materials, taking advantage of the gas barrier properties of graphene via its incorporation into a polymer matrix and the surface coating of the polymeric substrate.…”

Rational and practical exfoliation of graphite using well-defined poly(3-hexylthiophene) for the preparation of conductive polymer/graphene composite

“…One of the unique properties of graphene is its molecular barrier property, which prevents gas permeation3414243. We anticipated that the P3HT/graphene composite can be used for the anti-oxidation of oxidizable metal substrates in electronics.…”

Gas permeation and selectivity of poly(dimethylsiloxane)/graphene oxide composite elastomer membranes

“…into the polymer matrix can significantly increase the gas barrier performance by introducing tortuous pathways through which the gas permeates [12][13][14][15][16]. To quantitatively measure the permeation of various gases, single gas permeation tests were performed, and the results are shown in Figure 1.…”