Graphene-induced enhancement of water vapor barrier in polymer nanocomposites

Damari, Sivan Peretz; Cullari, Lucas Luciano; Nadiv, Roey; Nir, Y.; Laredo, Dalia; Grunlan, Jaime C.; Regev, Oren

doi:10.1016/j.compositesb.2017.09.056

Cited by 43 publications

(16 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher performance of FLG Graphexel may be attributed to its larger flake lateral size. In fact it was reported that large lateral size particles as well as large aspect ratios enhanced the barrier properties even for randomly orientated fillers into the matrix [51,52]. Furthermore, the FLG/WPU composite films prepared in this work presented a higher barrier performance compared to other results reported in the literature.…”

Section: Nanocomposite Films-low Composition Rangementioning

confidence: 47%

Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties

Cunha

Paiva

2019

J. Compos. Sci.

View full text Add to dashboard Cite

Graphene has excellent mechanical, thermal, and electrical properties. Graphene can serve as potential reinforcement in polymer-based nanocomposites. In order to achieve this goal, graphene has to be distributed homogeneously and dispersed throughout the polymer matrix, establishing a strong interface with the polymer. Solution mixing is an interesting method for the preparation of homogeneous nanocomposites, in particular when using environmentally friendly solvents such as water. The major difficulty met in the production of graphene/polymer composites concerns the preparation and stabilization of graphene in aqueous suspension. In the present work three different graphite-based materials, with different crystallinity and purity grades, were exfoliated in aqueous solution of an amphiphilic pyrene derivative, forming few-layer graphene (FLG). The FLG prepared was dispersed in waterborne polyurethane (WPU) to produce composite films. The composite films were produced by solvent casting and spray coating, forming free-standing films that were characterized in terms of its distribution of FLG through the composite, its permeability to water vapor, its electrical resistivity, and its mechanical properties. The studies demonstrated the influence of different factors on the composite film properties such as the use of graphite vs. FLG, the FLG lateral dimensions, and the FLG composition and composite preparation method.

show abstract

Section: Nanocomposite Films-low Composition Rangementioning

confidence: 47%

Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties

Cunha

Paiva

2019

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…Polymer/inorganic nanocomposites can effectively reduce the WVTR of polymers also with high flexibility via blending, intercalating, in situ polymerization, or sol–gel reaction . The WVTR of the new composites can be effectively decreased to 0.01−0.1 g m −2 day −1 .…”

Section: Large‐scale Productionmentioning

confidence: 99%

Application Challenges in Fiber and Textile Electronics

et al. 2019

View full text Add to dashboard Cite

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201901971. (2 of 25)www.advmat.de www.advancedsciencenews.com energy and then deliver it to power other electronic devices whenever we want. The existing fiber-shaped energy storage devices include the supercapacitor, [15] the lithium (Li)-ion battery, [16] the lithium-sulfur battery, [17] the lithium-air battery, [18] the zinc-air battery, [19] the aluminum-air battery, [20] the sodiumion battery, [21] the zinc-ion battery, [22] and the silver-zinc battery. [23] Among them, the supercapacitor has been reported mostly due to the easy fabrication, and lithium-ion battery has laid the foundation for the development of other fiber-shaped batteries, which are thus discussed mainly in this review. 3) Light-emitting devices have been developed for various applications such as display, illumination, and photo therapy. According to the working mechanisms, there are electroluminescence, [24] mechanoluminescence, [25] photoluminescence, [26] thermoluminescence, [27] sonoluminescence, [28] and chemiluminescence. [29] Among these, fiber-shaped electroluminescent devices have been developed extensively due to their good controllability, driven by direct current (DC) [30] or alternating current (AC) [31] electrical method, which are expounded mainly later. 4) Fibershaped sensors have found great potentials in the field of wearable medical devices for fitness monitoring and medical diagnostics especially as aging populations grow. By virtue of the 1D structure, fiber-shaped sensors can be implanted into the body with little injure or they can detect multiple signals simultaneously after integration into a tiny unit. [32] Fiber-shaped sensors generally work via physical processes on the basis of conducting fiber [33] and optical fiber, [34] and chemical processes based on chemical ligand. [35] Thereinto, fiber optic sensors have already been used in petrochemical, electric power, medical, civil engineering, etc. The detailed discussions about the above three fiber-shaped sensors are presented in the later section.Despite the great progress made in fiber and textile electronics, we have to realize that most of the research results are far from practical applications due to several existing obstacles. The performances of fiber-shaped electronic devices are not good enough to attract investors. For instance, although fiber-shaped solar cells have achieved a record power conversion efficiency (PCE) of 10%, [36] this value falls far below the certified efficiency of 24.2% for planar solar cells. [37] Besides, fiber-shaped electronic devices often decay in performance further as their lengths increase. Apart from low performances, scalable fabrication is another hard nut to crack if fiber-shaped electronic devices are to be commercialized. For one thing, researchers usually can only realize fiber-shaped electronic devices with the lengths from several to hundreds of millimeters at present owing to the absence of appropr...

show abstract

“…Over the last years, two dimensional (2D) materials (graphene, phosphorene, silicene) became the subject of several scienti c studies and their potential for the production of the next-generation of electronic and energy conversion devices. Since its discovery in 2004 by Geim and coworkers, graphene became an attractive material due to of its superior electrical, thermal, and mechanical properties [15,16]. Graphene oxide nanosheets (GOn) can be obtained in large quantities from graphite using low-cost processes [17].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Poly(Vinylidene Fluoride) and Styrene Butadiene Rubber Blend Magneto-responsive Nanocomposites Based on Hybrid Graphene Oxide and Fe3O4: Synthesis, Preparation and Characterization

Essabir

Raji

Rodrigue

et al. 2021

Preprint

View full text Add to dashboard Cite

Functional nanocomposites based on a blend of styrene butadiene rubber (SBR) and polyvinylidene difluoride (PVDF) as the matrix reinforced by a hybrid nanofiller system of graphene oxide nanosheets (GOn) and ferromagnetic nanoparticles (Fe3O4) at different weight ratios (3.75:1.25; 2.5:2.5 and 1.25:3.75) were successfully prepared and characterized to determine the effect of nanofillers hybridization in improving the structural,mechanical, dielectric/electrical, magnetic and thermal properties of a polymer blend (PVDF-SBR) for electromagnetic interference (EMI) shielding applications. Due to the synergy between both nanofillers, it was found that the Young’s modulus of the nanocomposite containing 5 wt.% of the hybrid nanofiller was significantly improved (87%), while the strain at yield remained constant due to the low particle content and the rubbery effect of the SBR copolymer. In addition, the degradation temperature of the matrix was shifted from 464°C to 472 °C with the addition of 2.5:2.5 of GOn:Fe3O4. Finally, the hybrid reinforcement also had a positive effect on the electrical and magnetic properties of the nanocomposites with an improvement that exceeds 30%. By careful selection of synthetic techniques and understanding/exploiting the unique physics of the polymeric nanocomposites in such materials, novel functional polymer-inorganic nanocomposites can be designed and fabricated for new interesting in magneto applications such as superparamagnetism, electromagnetic wave absorption, and electromagnetic interference shielding.

show abstract

Graphene-induced enhancement of water vapor barrier in polymer nanocomposites

Cited by 43 publications

References 70 publications

Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties

Composite Films of Waterborne Polyurethane and Few-Layer Graphene—Enhancing Barrier, Mechanical, and Electrical Properties

Application Challenges in Fiber and Textile Electronics

Multifunctional Poly(Vinylidene Fluoride) and Styrene Butadiene Rubber Blend Magneto-responsive Nanocomposites Based on Hybrid Graphene Oxide and Fe3O4: Synthesis, Preparation and Characterization

Contact Info

Product

Resources

About