Layer-structured graphene oxide/polyvinyl alcohol nanocomposites: dramatic enhancement of hydrogen gas barrier properties

2014 ◽  
Vol 2 (31) ◽  
pp. 12158 ◽  
Author(s):  
Rama K. Layek ◽  
Ashok Kumar Das ◽  
Min Uk Park ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Barrier Properties ◽  
Hydrogen Gas ◽  
Gas Barrier ◽  
Gas Barrier Properties

scholarly journals Fabrication of graphene oxide/montmorillonite nanocomposite flexible thin films with improved gas-barrier properties

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 39083-39089 ◽  
Author(s):  
Se Jung Kim ◽  
Tan young Kim ◽  
Byung Hyun Kang ◽  
Gun-Hwan Lee ◽  
Byeong-Kwon Ju
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Barrier Properties ◽  
Inorganic Materials ◽  
Gas Barrier ◽  
Gas Barrier Properties

Nanocomposites are potential substitutes for inorganic materials in fabricating flexible gas-barrier thin films.

Nanocomposite Films of Poly(vinyl alcohol)-Grafted Graphene Oxide/Poly(vinyl alcohol) for Gas Barrier Film Applications

2015 ◽  
Vol 15 (10) ◽  
pp. 8348-8352 ◽  
Author(s):  
Min Eui Lee ◽  
Hyoung-Joon Jin
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Transmission Rate ◽  
Barrier Properties ◽  
Nanocomposite Films ◽  
Strong Interactions ◽  
Poly Vinyl Alcohol ◽  
Gas Barrier ◽  
Oxygen Transmission Rate ◽  
Gas Barrier Properties

Poly(vinyl alcohol) (PVA) composites containing graphene oxide (GO) functionalized with PVA were synthesized via the esterification of the carboxylic groups of GO. The presence of PVA-grafted GO (PVA-g-GO) in the PVA matrix induced strong interactions between the chains of the PVA matrix and allowed the PVA-g-GO to be uniformly dispersed throughout the matrix. The grafting of PVA to GO increased the gas barrier properties of the GO/PVA composites because of the increased compatibility between GO and PVA. The PVA-g-GO/PVA composites were used to coat the surface of poly(ethylene terephthalate) films. These coated films exhibited excellent gas barrier properties; the film containing 0.3 wt% of PVA-g-GO had an oxygen transmission rate (OTR) of 0.025 cc/(m2 · day) and an optical transmittance of 83.8%. As a result, PVA-g-GO/PVA composites that exhibited enhanced gas barrier properties were prepared with a solution mixing method.

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