Synergic effect of graphene and MWCNT fillers on electromagnetic shielding properties of graphene–MWCNT/ABS nanocomposites

Sharma, Shreya; Gupta, Vinay; Tandon, R. P.; Sachdev, V. K.

doi:10.1039/c5ra23418b

Cited by 28 publications

(31 citation statements)

References 36 publications

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“…Alongside the mostly beneficial changes that this new order has ushered in, the fast and growing proliferation of equipment and mobile electronic devices, such as cell phones, laptops, and tablets, have also given rise to serious problems of electromagnetic interferences (EMI), and possibly to human diseases. As a result, shielding materials, especially those based on polymer nanocomposites consisting of insulating polymer matrices and conductive carbon nanoparticles, are being widely studied in a bid to overcome these problems [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, however, CNT obtained by chemical vapor deposition (CVD) are usually expensive, leading to graphene produced from graphite being used as a cheaper alternative [9]. Recently, the search for synergic effects and cost reductions led to studies of hybrid polymer nanocomposites of carbon nanoparticles [1,6,[10][11][12][13]. According to the literature, the combination of carbon nanoadditives of different shapes improves the conductive network in hybrid nanocomposites [6,11,13].…”

Section: Introductionmentioning

confidence: 99%

“…CNT and graphite nanoplates, in small portions of 2/1.5 wt.% of CNT/graphite nanoplates, respectively, prepared by in situ polymerization, presented an EMI-SE of ≈ 20.2 [10], which is the shielding effectiveness usually required for commercial applications [1, 8, 10-12, 14, 15]. In another study, hybrid nanocomposites of acrylonitrile butadiene styrene (ABS), CNT, and GR, prepared by dry tumble mixing followed by hot compaction, exhibited an improvement in the EMI-SE from 7.5 to 26.8 dB by the addition of 1 wt.% of CNT to an ABS/GR nanocomposite [6]. On the other hand, ABS/CNT/Carbon black (CB) hybrid nanocomposites, prepared by solution casting followed by hot compression, did not present any synergic effects.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid nanocomposites of thermoplastic elastomer and carbon nanoadditives for electromagnetic shielding

Kuester

Demarquette

Ferreira

et al. 2017

European Polymer Journal

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Hybrid nanocomposites of poly (styrene-b-ethylene-ran-butylene-b-styrene) (SEBS), graphene nanoplatelets (GnP), and carbon nanotubes (CNT) were successfully prepared by melt compounding for electromagnetic shielding applications. The morphologies of the carbon nanoadditives and nanocomposites were investigated by Raman spectroscopy, field emission gun scanning electron microscopy, and rheological analysis. DC electrical conductivity was assessed by two-probe and four-probe techniques. Electromagnetic interference shielding effectiveness, shielding mechanisms, and dielectric properties were conducted in the X-band microwave frequency range (8.2-12.4 GHz). The results showed that CNT had a higher affinity with the matrix, and were better dispersed than GnP. SEBS/GnP/CNT nanocomposites induced an electrical conductivity increase of 17 orders of magnitude compared to the polymer matrix. The hybrid nanocomposites presented synergic effects on EMI-SE when compared to the singlecomponent nanocomposites (SEBS/GnP and SEBS/CNT). The maximum EMI-SE of 36.47dB (reduction of 99.98% of the incident radiation) was achieved for the SEBS/GnP/CNT nanocomposite with 5/10 wt.% of GnP/CNT, respectively. All the hybrid nanocomposites with CNT loadings equal to or higher than 8 wt.%. presented the required EMI-SE for commercial applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid nanocomposites of thermoplastic elastomer and carbon nanoadditives for electromagnetic shielding

Kuester

Demarquette

Ferreira

et al. 2017

European Polymer Journal

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“…One very interesting strategy for reducing the filler content of CPCs is by incorporating two or more conductive fillers into insulating polymer matrix . The incorporation of different fillers in the same matrix (hybrid systems) may improve the composite properties if a synergistic effect is reached . Kuester et al .…”

Section: Introductionmentioning

confidence: 99%

“…With a total amount of 10 wt % the single filler composites showed EMI SE of 6.37 dB for SEBS/GnP, and 20.78 dB for SEBS/CNT, while the hybrid systems SEBS/GnP/CNT with component fraction of 2:8 (GnP:CNT) presented a SE of 23.30 dB. Sharma et al . studied the synergistic effect of adding 1 wt % of multi‐walled carbon nanotube (MWCNT) in GE/ABS composites.…”

Section: Introductionmentioning

confidence: 99%

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

Schmitz

Silva

Ramôa

et al. 2018

J of Applied Polymer Sci

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This work evaluates the influence of two types of carbonaceous fillers, carbon black (CB) and carbon nanotubes (CNTs), on the electrical, electromagnetic, and rheological properties of composites based on poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS) prepared by the melt mixing. Electrical conductivity, electromagnetic shielding efficiency (EMI SE) in the X‐band frequency range (8–12.4 GHz), and melt flow index (MFI) results showed that ABS/CNT composites exhibit higher electrical conductivity and EMI SE, but lower MFI when compared to ABS/CB composites. The electrical conductivity of the binary composites showed an increase of around 16 orders of magnitude, when compared to neat ABS, for both fillers. Binary composites with 5 and 15 wt % of filler showed an EMI SE of, respectively, −44 and −83 dB for ABS/CNT, and −9 and −34 dB for ABS/CB. MFI for binary composites with 5 wt % were 15.45 and 0.55 g/10 min for CB and CNT, respectively. Hybrid composites ABS/CNT.CB with 3 wt % total filler and fraction 50:50 and 75:25 showed good correlation between EMI SE and MFI. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46546.

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High‐performance thermoplastic polyurethane nanocomposites induced by hybrid application of functionalized graphene and carbon nanotubes

Rostami

Moosavi

2019

J of Applied Polymer Sci

110

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A hybrid polymeric system containing carbon nanofillers with different geometrical dimensions is proposed for strategic applications, particularly for electrical properties. Two different carbon nanofillers including functionalized multiwalled carbon nanotubes (fCNTs) and functionalized graphene nanoplatelets (fGnPs) were added to thermoplastic polyurethane (TPU) to prepare single and hybrid nanofiller filled TPU through solution mixing. Sufficient exfoliation of the fGNPs in the single nanocomposites was confirmed by X‐ray diffraction, while single filler and hybrid TPU nanocomposites containing fCNTs showed some re‐aggregation of these nanofillers. Linear rheology together with scanning electron microscopy revealed a proper exfoliation and dispersion degree for fGnPs and fCNTs, respectively. We have shown that simultaneous addition of fCNTs–fGnPs in the form of a hybrid system into the TPU made a large surface area available and strong interfacial interactions were formed between the hybrid network and the TPU matrix. This in turn led to electrical, thermal and mechanical properties, which were superior to those predicted by the mixture law. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48520.

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Synergic effect of graphene and MWCNT fillers on electromagnetic shielding properties of graphene–MWCNT/ABS nanocomposites

Abstract: Graphene–MWCNT/ABS nanocomposites have been prepared using a solvent-free dry tumble mixing process followed by hot compaction.

Cited by 28 publications

References 36 publications

Hybrid nanocomposites of thermoplastic elastomer and carbon nanoadditives for electromagnetic shielding

Hybrid nanocomposites of thermoplastic elastomer and carbon nanoadditives for electromagnetic shielding

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

High‐performance thermoplastic polyurethane nanocomposites induced by hybrid application of functionalized graphene and carbon nanotubes

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