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.

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.

scholarly journals Fabrication and Characterization of Luminescence Film Sensor for Detecting Defects of Barrier Films

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Pu-Reun Choi ◽  
Hyun Chul Kim ◽  
Sun Min Kim ◽  
Eunhae Koo
Keyword(s):  
Water Vapor ◽  
Flexible Electronics ◽  
Transmission Rate ◽  
Fluorescence Emission ◽  
Flexible Display ◽  
Sem Images ◽  
Excitation Peak ◽  
Film Sensor ◽  
Barrier Films ◽  
Barrier Film

The most critical issue on flexible electronics such as organic solar-cell, OLEDs, and flexible display is the protection of the core active materials from the degradation by water and oxygen. The defect of barrier film is the main channel for the transmission of water and oxygen molecules. Herein, in order to monitor the defects of barrier films, we have developed anthracene boronic acid pinacol ester (ABAPE) sensor which is very sensitive to water vapor. When ABAPE film is exposed to water, it gives off fluorescence emission at 389 and 408 nm under excitation peak at 366 nm. Based on the fluorescence microscopy and SEM images, the optical method using the ABAPE sensor film can monitor the defects of barrier film smaller than 1 μm. This result suggests that ABAPE can be utilized to monitor the defect and water vapor transmission rate (WVTR) in the barrier film.

Surface modified graphene oxide/poly(vinyl alcohol) composite for enhanced hydrogen gas barrier film

2016 ◽  
Vol 50 ◽  
pp. 49-56 ◽  
Author(s):  
Hongyu Liu ◽  
Parthasarathi Bandyopadhyay ◽  
Nam Hoon Kim ◽  
Bongho Moon ◽  
Joong Hee Lee
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Hydrogen Gas ◽  
Poly Vinyl Alcohol ◽  
Gas Barrier ◽  
Modified Graphene Oxide ◽  
Surface Modified ◽  
Modified Graphene ◽  
Barrier Film

EVALUATION OF THERMO-OXIDATIVE DEGRADATION BEHAVIOR OF GASKET RUBBER SHEET DEPOSITED WITH SiOxNy GAS BARRIER FILMS

2012 ◽  
Vol 06 ◽  
pp. 413-418
Author(s):  
TAISHI KOBAYASHI ◽  
YOSHIHISA TABATA ◽  
DAISUKE YONEKURA ◽  
RI-ICHI MURAKAMI
Keyword(s):  
Tensile Test ◽  
Transmission Rate ◽  
Oxidative Degradation ◽  
Heating Time ◽  
Degradation Behavior ◽  
Gas Barrier ◽  
Rubber Sheet ◽  
Oxygen Transmission Rate ◽  
Thermo Oxidative Degradation ◽  
Barrier Film

The purpose of this study is to clarify the effect of the film thickness of SiO x N y gas barrier film on the thermo-oxidative degradation behavior of gasket rubber sheet with SiO x N y film. SiO x N y film was deposited by DC magnetron sputtering method. SiO x N y films were deposited for deposition time 10, 20, 40 and 60 minutes. Chemical bonding states of SiO x N y films were analyzed by FT-IR. Oxygen transmission rate of SiO x N y films were measured using PET substrate with SiO x N y films. The surface morphology of the film deposited on the gasket rubber sheet was observed using atomic force microscope. Thermo-oxidative degradation of gasket rubber sheet was evaluated by tensile test after heating. Heating of the samples was performed at 160, 170 and 180°C under various heating time. The fracture surface of gasket rubber sheet after tensile test was observed using scanning electron microscope. As a result, it was found that the gas barrier film was effective to delay the thermo-oxidative degradation of gasket rubber sheet, especially heated at 160°C heating.

Hydroxide-ion-conductive gas barrier films based on layered double hydroxide/polysulfone multilayers

2018 ◽  
Vol 54 (56) ◽  
pp. 7778-7781 ◽  
Author(s):  
Xiaozhi Xu ◽  
Lumei Wang ◽  
Jiajie Wang ◽  
Qing Yin ◽  
Siyuan Dong ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Quaternary Ammonium ◽  
Ion Conductivity ◽  
Layer By Layer ◽  
Hybrid Films ◽  
Gas Barrier ◽  
Hydroxide Ion ◽  
Barrier Films ◽  
Double Hydroxide ◽  
Layer Assembly

Hybrid films were fabricated via the layer-by-layer assembly of layered double hydroxide (LDH) nanoplates and quaternary ammonium grafted polysulfone (QAPSF), and showed dual functionality with both gas barrier and hydroxide ion conductivity properties.

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