Effect of carbon nanoparticle type, content, and stress on piezoresistive polyethylene nanocomposites

Rizvi, Reza; Naguib, Hani E.

doi:10.1002/pen.24002

Cited by 10 publications

(4 citation statements)

References 37 publications

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“…The percolation thresholds for both the systems are very low, which are 0.81 vol % and 0.49 vol %, respectively, for the single and hybrid filler systems. These two values are generally lower than those (usually 2-4 wt %) reported in the literature [59][60][61] for various polyolefinbased nanocomposites. Moreover, the electrical conductivity achieved herein is also higher than those reported for graphene/ MWCNTs/styrene-butadiene-styrene block copolymer composites.…”

Section: Performance Of Hdpe-based Compositescontrasting

confidence: 55%

Hybrid modification of high‐density polyethylene with hyperbranched polyethylene‐functionalized multiwalled carbon nanotubes and few‐layered graphene

Zheng

et al. 2017

J of Applied Polymer Sci

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Herein, a facile method has been reported to efficiently prepare debundled multiwalled carbon nanotubes (MWCNT) and few‐layered graphene using a hyperbranched polyethylene (HBPE), and as hybrid fillers, their modification effects on high‐density polyethylene (HDPE) are well demonstrated. Stable dispersions of debundled MWCNT and graphene in chloroform were respectively obtained by sonication using the HBPE as stabilizer, and MWCNT/graphene/HDPE ternary nanocomposites were then fabricated by solution‐assisted premixing and subsequent melt mixing, at a fixed mass ratio of MWCNT/graphene of 3:1 and serially changed filler loadings. It is found that the MWCNT and graphene have good dispersibility in the composites, and as hybrid fillers, they can effectively form composite net‐like structure, which makes them show better modification effects on both the electrically and thermally conductive properties of HDPE, as compared to the single MWCNT. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44848.

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Section: Performance Of Hdpe-based Compositescontrasting

confidence: 55%

Hybrid modification of high‐density polyethylene with hyperbranched polyethylene‐functionalized multiwalled carbon nanotubes and few‐layered graphene

Zheng

et al. 2017

J of Applied Polymer Sci

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“…At low filler concentration, below the percolation threshold, the EVA composites remained an insulating material with an AC conductivity in the vicinity of 10 -15 S/m at 0.01 Hz, as shown in the inset. When the concentration is increased above the percolation threshold, the conductivity sharply increases, as explained by the percolation theory [26,[37][38][39][40] for which the conductivity can be expressed by [26,41,42] ( ) 4)…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Electrical and thermal conductivity of ethylene vinyl acetate composite with graphene and carbon black filler

et al. 2018

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Ethylene vinyl acetate (EVA) composites, including two different carbonaceous conductive fillers, carbon black (CB) and commercially available graphene (G), were fabricated by solventcasting and melt compounding methods. The effect of additives and process conditions on electrical and thermal properties of composites was investigated. The dielectric responses of EVA composites were characterized by a percolation threshold of 15 wt % for EVA/G prepared by solvent-casting. However, as the EVA/G15% was also subsequently extruded, the applied shear stress induced by extrusion caused deterioration of the electrical network and reduced the composite's electrical conductivity. A percolating network was found for the EVA composites containing CB at around 5-7 wt % with 10 orders of magnitude increase in electrical conductivity with respect to the neat EVA. The thermal conductivity of EVA/CB7% and EVA/G15% increased 16 and 22 % respectively, in comparison to the neat EVA. Both additives increased the electrical and thermal conductivity of composites to be appropriate as jackets for high-voltage cables.

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“…It is worth mentioning the work of Rizvi and Naguib ( 2014 ), where carbon nanoparticles (C-NPs) were studied in polyethylene (PE) composites. The C-NPs fillers investigated were single-wall carbon nanotube (SWCNT), multi-wall carbon nanotube (MWCNT), and graphene nanoplatelets (GNP).…”

Section: Nanomaterials For Wearable Piezoresistive Sensorsmentioning

confidence: 99%

The status and perspectives of nanostructured materials and fabrication processes for wearable piezoresistive sensors

et al. 2022

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The wearable sensors have attracted a growing interest in different markets, including health, fitness, gaming, and entertainment, due to their outstanding characteristics of convenience, simplicity, accuracy, speed, and competitive price. The development of different types of wearable sensors was only possible due to advances in smart nanostructured materials with properties to detect changes in temperature, touch, pressure, movement, and humidity. Among the various sensing nanomaterials used in wearable sensors, the piezoresistive type has been extensively investigated and their potential have been demonstrated for different applications. In this review article, the current status and challenges of nanomaterials and fabrication processes for wearable piezoresistive sensors are presented in three parts. The first part focuses on the different types of sensing nanomaterials, namely, zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D) piezoresistive nanomaterials. Then, in second part, their fabrication processes and integration are discussed. Finally, the last part presents examples of wearable piezoresistive sensors and their applications.

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Effect of carbon nanoparticle type, content, and stress on piezoresistive polyethylene nanocomposites

Cited by 10 publications

References 37 publications

Hybrid modification of high‐density polyethylene with hyperbranched polyethylene‐functionalized multiwalled carbon nanotubes and few‐layered graphene

Hybrid modification of high‐density polyethylene with hyperbranched polyethylene‐functionalized multiwalled carbon nanotubes and few‐layered graphene

Electrical and thermal conductivity of ethylene vinyl acetate composite with graphene and carbon black filler

The status and perspectives of nanostructured materials and fabrication processes for wearable piezoresistive sensors

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