Tuning nanostructure of graphene oxide/polyelectrolyte LbL assemblies by controlling pH of GO suspension to fabricate transparent and super gas barrier films

Nanoscale ◽  
2013 ◽  
Vol 5 (19) ◽  
pp. 9081 ◽  
Author(s):  
Jung-Tsai Chen ◽  
Ywu-Jang Fu ◽  
Quan-Fu An ◽  
Shen-Chuan Lo ◽  
Shu-Hsien Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Barrier ◽  
Barrier Films

Borate cross-linked graphene oxide–chitosan as robust and high gas barrier films

Nanoscale ◽  
2016 ◽  
Vol 8 (20) ◽  
pp. 10783-10791 ◽  
Author(s):  
Ning Yan ◽  
Filomena Capezzuto ◽  
Marino Lavorgna ◽  
Giovanna G. Buonocore ◽  
Fabiana Tescione ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Barrier ◽  
Barrier Films

Layer-by-layer assembled multilayers of charged polyurethane and graphene oxide platelets for flexible and stretchable gas barrier films

Soft Matter ◽  
2018 ◽  
Vol 14 (32) ◽  
pp. 6708-6715 ◽  
Author(s):  
Min Ji Noh ◽  
Min Jun Oh ◽  
Jae Ho Choi ◽  
Jae Chul Yu ◽  
Woo-Jae Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Barrier Property ◽  
Layer By Layer ◽  
Gas Barrier ◽  
Barrier Films ◽  
Self Assembled ◽  
Flexible Polyurethane

To improve stretchability of gas barrier films without sacrificing the barrier property, alternatively charged and highly flexible polyurethane chains were layer-by-layer self-assembled with graphene oxide nano-platelets.

scholarly journals Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seung Eun Choi ◽  
Sung-Soo Kim ◽  
Eunji Choi ◽  
Ji Hoon Kim ◽  
Yunkyu Choi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Liquid Crystal ◽  
Diffusion Length ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Barrier Coating ◽  
Coating Method ◽  
Gas Molecules ◽  
Pet Film ◽  
Vapor Treatment

AbstractA layered graphene oxide/ethylenediamine (GO/EDA) composite film was developed by exposing aqueous GO liquid crystal (GOLC) coating to EDA vapor and its effects on the gas barrier performance of GO film were systematically investigated. When a GO/EDA coating with a thickness of approximately 1 μm was applied to a neat polyethylene terephthalate (PET) film, the resultant film was highly impermeable to gas molecules, particularly reducing the gas permeance up to 99.6% for He and 98.5% for H2 in comparison to the neat PET film. The gas barrier properties can be attributed to the long diffusion length through stacked GO nanosheets. The EDA can crosslink oxygen-containing groups of GO, enhancing the mechanical properties of the GO/EDA coating with hardness and elastic modulus values up to 1.14 and 28.7 GPa, respectively. By the synergistic effect of the viscoelastic properties of GOLC and the volatility of EDA, this coating method can be applied to complex geometries and EDA intercalation can be spontaneously achieved through the scaffold of the GOLC.

scholarly journals Layer-by-Layer Assembled Nano-Composite Multilayer Gas Barrier Film Manufactured with Stretchable Substrate

2021 ◽  
Vol 11 (13) ◽  
pp. 5794
Author(s):  
Se-Jung Kim ◽  
Tanyoung Kim ◽  
Dongsoo Kim ◽  
Byeong-Kwon Ju
Keyword(s):  
Transmission Rate ◽  
Significant Loss ◽  
Light Transmittance ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Gas Barrier ◽  
Nano Composite ◽  
Barrier Films ◽  
Potential Applications ◽  
Barrier Film

Most gas barrier films produce cracks that lead to a significant loss of gas barrier integrity when strain is applied. In order to fabricate stretchable gas barrier films with low water permeability and high endurance after stretching, we used polydiallydimethylammonium (PDDA) mixed with graphene oxide (GO) and poly (vinyl alcohol) (PVA) mixed with montmorillonite (MMT). These films were manufactured by layer-by-layer assembly on an Ecoflex/polydimethylsiloxane (PDMS) substrate with pre-strain applied. A total of 30 layers of PDDA (GO)/PVA (MMT) coated on the substrate exhibited a low water vapor transmission rate of 2.5 × 10−2 g/m2 day after 100 cycles of stretching (30% strain). In addition, they exhibited a high light transmittance of 86.54%. Thus, the prepared stretchable gas barrier film has potential applications as a barrier film in transparent and stretchable electronic devices.

Three-dimensionally stacked Al2O3/graphene oxide for gas barrier applications

Carbon ◽  
2017 ◽  
Vol 125 ◽  
pp. 464-471 ◽  
Author(s):  
Dong-won Choi ◽  
Hun Park ◽  
Jun Hyung Lim ◽  
Tae Hee Han ◽  
Jin-Seong Park
Keyword(s):  
Graphene Oxide ◽  
Gas Barrier
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