Graphene to graphite; a layer by layer experimental measurements and density function theory calculations of electric conductivity

Amer, Mäher S.; Kamil, Mohammed; Mafrage, Ali M. Al

doi:10.1080/14786435.2020.1766710

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…This situation can be attributed to the increase of GNPG in PS resin. Although PNGL 0.6 10.0%/PS and PG2.0%/PS have the same PG contents, the PNGL 0.6 10.0%/PS has higher electrical conductivity than PG2.0%/PS, because the few layer GNs were exfoliated from the Pickering emulsion 24,48 . On the contrary, the ρ v of PNGL 0.6 10.0%/PS shows a decline of about three orders of magnitude compared with pure PS resin in Figure 7a.…”

Section: Resultsmentioning

confidence: 96%

“…Although PNGL 0.6 10.0%/PS and PG2.0%/PS have the same PG contents, the PNGL 0.6 10.0%/PS has higher electrical conductivity than PG2.0%/PS, because the few layer GNs were exfoliated from the Pickering emulsion. 24,48 On the contrary, the ρ v of PNGL 0.6 10.0%/PS shows a decline of about three orders of magnitude compared with pure PS resin in Figure 7a. Even though the filler content reaches up to 10.0 wt%, the PNGL 0.6 10.0%/PS still maintains the electrical resistivity with the corresponding ρ v of 3.63 Â 10 9 ΩÁm.…”

Section: Thermal Conductivity Of Pngl X Y/psmentioning

confidence: 90%

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Graphene nanosheet stabilized Pickering emulsion and its polystyrene nanocomposites

Wang

et al. 2023

J of Applied Polymer Sci

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High thermal conductivity and electrical insulation materials are necessary for packaging materials of miniaturized electronic equipment at present. Graphene nanosheets (GNs) have great potential in polymer composites due to its excellent thermal conductivity. However, the ultra‐high conductivity of GNs will reduce the insulation of polymer composites, so that the GN composites have good thermal conductivity and electrical insulation has become the focus of research. Herein, the closed cell polystyrene nanocomposites are polymerized by using a Pickering emulsion route. Based on the exfoliating effect of pristine graphite at the oil–water interface and the amphiphilic properties of GNs during the preparation of emulsion, the resulting graphite can achieve good dispersion in the polystyrene resin. Furthermore, the high heat transfer rate of the resulting graphite makes the temperature of polystyrene resin increase by 60.2°C at room temperature within 1 min. Meanwhile, the high volume electrical resistivity (3.63 × 109 Ω·m) and breakdown strength (33.8 kV·mm−1) confirms the PNGL0.610%/PS composite keep excellent electrical insulation at 10.0 wt% filler loading.

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Section: Resultsmentioning

confidence: 96%

Section: Thermal Conductivity Of Pngl X Y/psmentioning

confidence: 90%