Fabrication of ultrahigh hydrogen barrier polyethyleneimine/graphene oxide films by LBL assembly fine-tuned with electric field application

Review of Electrochemically Triggered Macromolecular Film Buildup Processes and Their Biomedical Applications

“…Self-assembled PEI/graphene oxide multilayers appeared to be a practical high barrier H2 material. 235 When assembled under an electric field, enhanced H2 barrier properties were obtained due to an increase of the adsorbed amount of graphene oxide.…”

Gas permeation and microstructure of reduced graphene oxide/polyethyleneimine multilayer films createdviarecast and layer-by-layer deposition processes

“…14 A series of two-dimensional inorganic plates/ polymer composite lms with remarkable gas barrier properties have been reported. [15][16][17][18][19][20][21][22][23][24][25][26][27] Among the types of twodimensional inorganic plates that are available, graphene, or reduced graphene oxide (RGO), is one of the most preferred options, because it has high surface-to-volume ratio and excellent mechanical properties, as well as being hydrophobic and impermeable to most gases. For example, RGO/ polyethyleneimine composite lms with a brick-wall multilayer structure show excellent barrier behavior, high stability, and enhanced mechanical properties, making them suitable for barrier applications.…”

“…For example, RGO/ polyethyleneimine composite lms with a brick-wall multilayer structure show excellent barrier behavior, high stability, and enhanced mechanical properties, making them suitable for barrier applications. [17][18][19] However, the presence of hydrophilic polymers causes plasticization in the presence of moisture, resulting in rearrangement of the microstructure and increase in the gas permeability of the composite lms. 36,37 In order to reduce this moisture sensitivity, hydrophobic inorganic plates (such as graphene and RGO) and less hydrophilic polymers are utilized.…”

“…[36][37][38][39] To optimize the performance of composites, specic component ratios and processing conditions are required, and intensive studies could be very helpful in determining the optimal parameters. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] For a composite polymer lm, the microstructure and interactions among components can be extremely complex, [40][41][42][43] as well as the dynamics of gas permeation within it. [44][45][46] Previous studies have mainly focused on the performance of these lms.…”

Polyelectrolyte–Graphene Oxide Multilayer Composites for Array of Microchambers which are Mechanically Robust and Responsive to NIR Light

“…The technique allows precise control over vertical composition and thickness of the films at a nanometer level . It has been widely applied for assembly of polyelectrolytes, proteins, metal and metal oxide nanoparticles, clays, carbon nanotubes, and many other materials including GO–polymer films . A combination of LbL assembly and Langmuir–Blodgett technique was used to incorporate GO sheets onto the polyelectrolyte multilayer (PEM) films made of poly(allylamine hydrochloride) (PAH) and poly(sodium 4‐styrenesulfonate) (PSS) .…”