Aged layered double hydroxide nanosheet–polyvinyl alcohol dispersions for enhanced gas barrier coating performance

Yu, Jingfang; Chen, Chun-Ping; Gilchrist, James B.; Buffet, Jean-Charles; Wu, Zhonghua; Mo, Guang; Xie, Fei; O’Hare, Dermot

doi:10.1039/d1mh00433f

Cited by 10 publications

(10 citation statements)

References 49 publications

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“…[34][35][36][37][38][39] These properties of 2D materials make them suitable for use as filler materials in polymer matrix nanocomposite films for thin-film encapsulations and gas barrier applications. [40][41][42] Research is still required to develop long-term durable GDBFs with low-cost and easy manufacturing solutions to commercialize next-generation flexible electronic devices. The crack formation that occurs in GDBFs during usage renders the film's barrier properties, thus allowing the permeation of water vapor and oxygen.…”

Section: Self-healable Elastomeric Materials (Puamentioning

confidence: 99%

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

Mahmood

Khan

Kant

et al. 2022

Adv Materials Inter

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Self‐healable elastomeric materials (PUAxPU10–x‐PDMS, x = 4, 6, or 8) have been synthesized and utilized as substrates or encapsulation films on the top of barrier films (deposited on polyethylene terephthalate (PET) substrates) to improve their gas barrier properties for packaging applications. Hexa‐layer (HL) assembly consisting of two inorganic 2D nanoplatelets, including Mg‐Al layered double hydroxide (LDH) and hexagonal boron nitride (hBN), and two oppositely charged polyelectrolytes, that is, polyethyleneimine (PEI) and poly(sodium styrene‐4‐sulfonate) (PSS), have been developed by alternative depositions of HL (i.e., PSS/LDH/PSS/PEI/hBN/PEI) sequentially. Then, a layer‐by‐layer technique is applied to produce multiple assemblies of hexa‐layer (HL)n and reduce water vapor transmission rate (WVTR) values of elastomeric PUA8PU2‐PDMS and PET substrates. The optimum WVTR values of 7.1 × 10−3 and 8.0 × 10−3 g m−2 day−1 are achieved using barrier PET/(HL)8/PUA8PU2‐PDMS (125/3/1 µm) and PUA8PU2‐PDMS/(HL)8 (125/3 µm) films, respectively. The self‐healable barrier PUA8PU2‐PDMS and PUA8PU2‐PDMS/(HL)8 films recover their initial WVTR values after self‐healing of mechanically damaged films. Organic light‐emitting diodes (OLEDs) encapsulated with PET/(HL)8/PUA8PU2‐PDMS and PUA8PU2‐PDMS/(HL)8 have 9–10 times longer half‐lifetime values than bare OLEDs. Accordingly, this report develops transparent, stretchable, and self‐healable gas barrier films for next‐generation flexible electronic device packaging applications.

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Section: Self-healable Elastomeric Materials (Puamentioning

confidence: 99%

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

Mahmood

Khan

Kant

et al. 2022

Adv Materials Inter

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“…Applying polyvinyl alcohol (PVA) coating in PE films with enhanced oxygen barrier properties has attracted research interests because of the colorless, safe, and environmentally friendly qualities of PVA coating. 14,15 For instance, Wang et al 16 prepared PVA coating on the surface of polylactic acid (PLA) film. The OTR of the coated composite film was 18.6 cm 3 / (m 2 24 h 0.1 MPa), with a 99.4% decrease from the OTR of neat PLA of 765 cm 3 /(m 2 24 h 0.1 MPa); Schiessl et al 17 utilized nanoclay to modify PVA and applied it to biaxially oriented biaxially polypropylene (BOPP) with an OP value of 0.12 cm 3 standard temperature and pressure (STP) 1 μm/(m 2 d bar), a decrease from the OP of BOPP to 1.25 cm 3 (STP)/(m 2 d bar).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

Fu,

Wang,

Huang

et al. 2024

J of Applied Polymer Sci

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The limited oxygen barrier of polyethylene (PE) films has restricted their further application in food packaging, like emergency foods. Although its oxygen barrier property can be improved by applying a polyvinyl alcohol (PVA) coating, the application of PVA/PE composite films in high‐humidity environments is still challenging. Hence, this study aimed to enhance the oxygen barrier properties of PVA/PE composite films in high‐humidity environments. Specifically, PVA coatings were modified by the itaconic acid (IA) and magnesium‐aluminum layered double hydroxides (LDH), and then applied to PE films as bilayer coating. Because of the unique bilayer coating on the PE surface, the oxygen barrier property of PVA/PE composite film (IA/LDH‐p) in high‐humidity environments has been further improved. The results confirmed that IA/LDH‐p had an oxygen permeability coefficient of 1.92 ± 0.16 × 10−16 cm3 cm/(cm2 s Pa) under a high‐humidity environment test, 82.42% better than that of single‐layer coating coated on PE surface. After being stored at RH 90% for 36 h, the tensile strength and elongation at break values of IA/LDH‐p were 27.20 MPa and 919.63%, respectively. Overall, this obtained PVA/PE composite films showed great potential for application in emergency foods packaging, particularly in high‐humidity environments.

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“…Poly(vinyl alcohol) (PVA) is quite suitable for developing the highly filled polymer fiber because the large number of hydroxyl groups in molecular chains that promotes the interaction with fillers. [27][28][29][30][31][32][33] To date, many researchers have made significant progress on highly filled PVA fibers while it fails to meet the requirements of γ-rays shielding due to relatively low filler loadings. [34][35][36][37][38][39] First, it is a huge challenge for the solution spinning stability of highly filled PVA fibers, especially with high-Z fillers.…”

Section: Introductionmentioning

confidence: 99%

PbWO₄ Synergistically Modified with Styrene Maleic Anhydride and Bis(dioctyl pyrophosphate) Ethylene Titanate in Highly Filled Polymer Fibers for Enhanced γ‐Ray Shielding Safety and Wear Comfort of Articles

Mai

Zhang

Wang

et al. 2022

Adv Materials Technologies

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personal protective equipment (PPE) is of vital importance to radiation protection safety of nuclear personnel involved. [4][5][6] Currently, the PPE is fabricated with rubber-based composites containing high atomic number (high Z) fillers such as lead (Pb), tungsten (W), and bismuth (Bi). [7][8][9][10][11] Although it has various merits such as flexibility for wearability, its poor permeability for air and water vapor is negative to channel sweat away during work, which causes reduced wear comfort and then affects working efficiency. [12,13] Therefore, it is urgent to develop flexible materials with permeability for enhanced wear comfort and radiation protection safety of PPE.Many studies have attached importance to fabrics bearing heavy metals to meet the requirements. This is due to the fact that overlapped fabrics shield high-energy photons meanwhile offer curving passages for permeability. Coating high-Z fillers on textiles has the ability to shield highenergy photons while it tends to be peeled off and reduce permeability. [14][15][16][17][18][19] Alternatively, polymer fibers containing high-Z fillers for fabrics seems to address wear comfort meanwhile radiation shielding safety. Some high-Z fillers, such as Bi 2 O 3 , WO 3 , Bi 2 WO 6 , and BaSO 4 , have been intensely applied to fabricated various polymer fibers for shielding X-rays. [20][21][22][23][24][25] Note that current polymer fibers are generally filled with no more than 40 wt% fillers. This is due

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Aged layered double hydroxide nanosheet–polyvinyl alcohol dispersions for enhanced gas barrier coating performance

Abstract: The oxygen transmission rate of a PET coated film showed a 37-fold decrease using a dispersion of LDH nanosheets in polyvinyl alcohol that was prior aged for 8 weeks compared to the film coated with the equivalent freshly prepared LDH/PVA dispersion.

Cited by 10 publications

References 49 publications

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

PbWO₄ Synergistically Modified with Styrene Maleic Anhydride and Bis(dioctyl pyrophosphate) Ethylene Titanate in Highly Filled Polymer Fibers for Enhanced γ‐Ray Shielding Safety and Wear Comfort of Articles

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Aged layered double hydroxide nanosheet–polyvinyl alcohol dispersions for enhanced gas barrier coating performance

Abstract: The oxygen transmission rate of a PET coated film showed a 37-fold decrease using a dispersion of LDH nanosheets in polyvinyl alcohol that was prior aged for 8 weeks compared to the film coated with the equivalent freshly prepared LDH/PVA dispersion.

Cited by 10 publications

References 49 publications

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

Transparent, Stretchable, and Self‐Healable Gas Barrier Films with 2D Nanoplatelets for Flexible Electronic Device Packaging Applications

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

PbWO4 Synergistically Modified with Styrene Maleic Anhydride and Bis(dioctyl pyrophosphate) Ethylene Titanate in Highly Filled Polymer Fibers for Enhanced γ‐Ray Shielding Safety and Wear Comfort of Articles

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Product

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PbWO₄ Synergistically Modified with Styrene Maleic Anhydride and Bis(dioctyl pyrophosphate) Ethylene Titanate in Highly Filled Polymer Fibers for Enhanced γ‐Ray Shielding Safety and Wear Comfort of Articles