A comprehensive study on the impact of RGO/MWCNT hybrid filler reinforced polychloroprene rubber multifunctional nanocomposites

Maya, M.G.; Abraham, Jiji; P, Mohammed Arif; Moni, Grace; George, Jinu Jacob; George, Soney C.; Thomas, Sabu

doi:10.1016/j.polymertesting.2020.106525

Cited by 24 publications

(24 citation statements)

References 40 publications

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“…The values of the composite films at 10.3 GHz were higher than the thickness value of the corresponding test samples, which indicates that the EMI performance of the film can be significantly improved by increasing the sample thickness. Remarkably, the CNF-RGO/NBR composite film had superior EMI shielding effectiveness and ultrathin thickness compared with other EMI shielding materials [22][23][24][25][26]40,[47][48][49][50][51][52][53] (Figure 6d), which indicates that the CNF-RGO/NBR composite film has good potential as an ultrathin, flexible, and highly efficient EMI shielding material.…”

Section: Resultsmentioning

confidence: 94%

“…Additionally, the SE total value of the CNF-RGO/NBR film gradually increased with the GO mass fraction, which may have resulted from the increase of the electrical conductivity of these films with the GO mass fraction. To further elucidate the mechanism of EM shielding, the comparison of the total EMI shielding effectiveness (SE total ), microwave absorption (SE A ), and microwave reflection (SE R ) at the frequency of 10.2 GHz for the obtained CNF-RGO/NBR composite films with [22][23][24][25][26]40,[47][48][49][50][51][52][53] (the hollow shape indicates that the composite material is not flexible).…”

Section: Resultsmentioning

confidence: 99%

“…Figure 6. a) Comparison of total EMI shielding effectiveness (SE total ) of composite films at the frequency of 8.2-12.4 GHz; b) comparison of total EMI shielding effectiveness (SE total ), microwave absorption (SE A ), and microwave reflection (SE R ) at 10.2 GHz for obtained EMI shielding composites with different GO mass fraction; c) proportion of reflection (R), absorption (A), and transmission (T) of CNF-RGO/NBR composite films; d) schematic of EMI shielding of CNF-RGO/NBR composite films; e) EMI shielding effectiveness of CNF-RGO/NBR-31H depending on thickness; f) EMI shielding effectiveness of resultant composite film compared with other EMI shielding materials [22][23][24][25][26]40,[47][48][49][50][51][52][53]. (the hollow shape indicates that the composite material is not flexible).…”

mentioning

confidence: 99%

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Fabrication of Cellulose Nanofiber/Reduced Graphene Oxide/Nitrile Rubber Flexible Films Using Pickering Emulsion Technology for Electromagnetic Interference Shielding and Piezoresistive Sensor

Wang

Guan

Liao

et al. 2021

Macro Materials & Eng

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With the rapid development of flexible electronics, the demand for flexible electromagnetic interference (EMI) shielding materials is increasing. This study develops a new green and effective strategy, consisting of graphene oxide (GO) and cellulose nanofibrils (CNF) co‐stabilized Pickering emulsion combined with hot‐pressing technology, to prepare flexible and conductive nitrile rubber (NBR) composite films. The composite films consist of a 3D network conductive skeleton structure of reduced GO (RGO) and an isolated NBR structure. This specific design results in a maximum high conductivity of 99 S m−1, which is higher by an order of magnitude compared with that of the composites obtained using the traditional solution blending method, and a stable EMI shielding effectiveness of 25.81 dB in the X band. The introduction of the flexible NBR results in the excellent flexibility and structural strength of the composite film, and exhibits a decrease of 2.51% in the EMI shielding efficacy after 5000 cycles. As a piezoresistive sensor for wearable devices, the CNF‐RGO/NBR flexible film can hold precise current signals and respond to finger motion. The findings of this study can provide new insights for the design of conductive and flexible composites as wearable and portable medical equipment and electronic devices.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Fabrication of Cellulose Nanofiber/Reduced Graphene Oxide/Nitrile Rubber Flexible Films Using Pickering Emulsion Technology for Electromagnetic Interference Shielding and Piezoresistive Sensor

Wang

Guan

Liao

et al. 2021

Macro Materials & Eng

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“…The RGO/CR-RW display only a weight loss of ≈3% at 300-500 °C, which is probably due to the decomposition of O-containing functional groups in RGO and degradation of CR. [25,26] It can be concluded that presence of RGO/CR as modifier on the RW surface does not make a significant difference in thermal stability of RW.…”

Section: Characterizationmentioning

confidence: 99%

A Mechanically Flexible Superhydrophobic Rock Wool Modified with Reduced Graphene Oxide‐Chloroperene Rubber for Oil‐Spill Clean‐Up

Davardoostmanesh

Ahmadzadeh

2021

Global Challenges

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of oil spilled into the East China. [1] This accident imposed devastating impacts on the environment. In this regard, the cleanup strategies of oil spill should be implemented to significantly reduce the environmental damages. Conventional strategies including skimming, [2] bioremediation, [3] in situ burning, [4] and adsorption [5] have been widely used for oil-water separation. Among these approaches, adsorption is considered the most effective method with simplicity and low cost for oil pollutions removal. [6] Several adsorbent materials such as carbon aerogels, [7] graphene sponges, [8] and magnetic foams [9] have been used for this purpose due to their large pore volume and strong adsorption capacity. However, complicated preparation processes, high costs, and scalability challenges restrict the practical applications of these adsorbent materials. In this regard, the use of 3D porous materials such as wools and sponges is more effective. [10,11] Rock wool (RW) is an inorganic fiber material with the characteristics of high tensile strength, high chemical resistance, and excellent incombustibility. [12] It has been widely used as thermal insulator in buildings and industrial equipment. RW can be a good candidate for oil/water separation owning to its porous structure, low density, and low cost. However, due to the mixed hydrophilic/ oleophilic properties, the original RW adsorbs both water and oil simultaneously. Thus, it is not suitable for selective adsorption of oil. The modification of original RW could improve its hydrophobicity. Hao et al. [13] recently used polydimethylsiloxane (PDMS)/silica nanoparticle as modifying agent for preparation of superhydrophobic RW. However, PDMS/silica nanoparticle used as modifier is quite expensive which limits its large-scale applications.Graphene materials including graphene and reduced graphene oxide (RGO) are promising candidates as modifier considering their hydrophobicity. [14,15] Carbon lattice of graphene and its derivatives efficiently repels polar molecules and enhances affinity towards oil and organic solvents. [16,17] Graphene materials can increase the roughness of a substrate when used as coating. Presence of small amounts of oxygencontaining functional groups on RGO increases affinity toward polar solvents. [16] Jamsaz and Goharshadi [18] used polyurethaneThe leakage of industrial oil and organic wastewater discharge has caused serious damage to the natural environment and ecology. Therefore, implementation of a low-cost and high-performance adsorbent material is of great significant. This work reports the preparation of superhydrophobic rock wool (RW) for efficient clean-up of oil and organic solvents. The modified RW is prepared by coating a commercial RW with reduced graphene oxide (RGO) nanosheets under hydrothermal treatment. To improve the adhesion between the RGO nanosheets and RW, a film of chloroperene rubber is deposited on the RW surface followed by modification with RGO. The modified RW possesses superhydrophobicity and superoleophilicity wi...

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“…4 Accordingly, the EMI shielding properties of nanocarbon incorporated in polymethylmethacrylate (PMMA), polystyrene (PS), epoxy resin (ER), polypropylene (PP), polyurethane (PU), polyvinylalcohol (PVA), polydimethylsiloxane (PDMS), polyimide (PI), polyethylene (PE), natural rubber (NR) and few other polymers are reviewed below. 66–213…”

Section: Carbonaceous Nanomaterials/polymer Nanocompositesmentioning

confidence: 99%

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

Srivastava

Manna

2022

J. Mater. Chem. A

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A comprehensive study on the impact of RGO/MWCNT hybrid filler reinforced polychloroprene rubber multifunctional nanocomposites

Cited by 24 publications

References 40 publications

Fabrication of Cellulose Nanofiber/Reduced Graphene Oxide/Nitrile Rubber Flexible Films Using Pickering Emulsion Technology for Electromagnetic Interference Shielding and Piezoresistive Sensor

Fabrication of Cellulose Nanofiber/Reduced Graphene Oxide/Nitrile Rubber Flexible Films Using Pickering Emulsion Technology for Electromagnetic Interference Shielding and Piezoresistive Sensor

A Mechanically Flexible Superhydrophobic Rock Wool Modified with Reduced Graphene Oxide‐Chloroperene Rubber for Oil‐Spill Clean‐Up

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

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