Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure

Du, Jinhong; Zhao, Liang; Zeng, Yongchao; Zhang, Lili; Li, Feng; Liu, Pengfei; Liu, Chang

doi:10.1016/j.carbon.2010.11.013

Cited by 387 publications

(229 citation statements)

References 44 publications

Supporting

Mentioning

211

Contrasting

Unclassified

Order By: Relevance

“…It follows a power-law dependence of approximately 1~1.3 in a two dimensional system and 1.6~2 in a three dimensional system [39]. The critical concentration and the critical exponent of the nanocomposites were determined by a least square fitting of the experimental data in MATLAB, and the results are listed in Table 3.…”

Section: The Scaling Law Of Classical Percolation Theory (Equation 4)mentioning

confidence: 99%

Effect of processing conditions on the structure, electrical and mechanical properties of melt mixed high density polyethylene/multi-walled CNT composites in compression molding

Xiang¹,

Guo²,

Kumar

et al. 2017

Materials Testing

View full text Add to dashboard Cite

(2017). Effect of processing conditions on the structure, electrical and mechanical properties of melt mixed high density polyethylene/multi-walled CNT composites in compression molding. Materials Testing, 59 (2) Department of Materials Science and Engineering, University of Sheffield, S1 3JD, UK Abstract: Melt mixed high density polyethylene (HDPE)/multi-walled carbon nanotube (MWCNT) nanocomposites were prepared via twin-screw extrusion and then compression moulded into sheets. The effect of heating temperature, pressing time and cooling rate on the structure, electrical and mechanical properties of the compression moulded nanocomposites was systematically investigated. Volume resistivity tests indicate that the nanocomposite with 2 wt% MWCNTs, which is in the region of the electrical percolation threshold, is very sensitive to the compression moulding parameters such that heating temperature > pressing time > cooling rate. Generally, the resistivity of nanocomposites decreases with increasing heating temperature and pressing time. Interestingly, the electrical resistivity of the rapidly cooled nanocomposite with 2 wt% MWCNTs is 1~2 orders lower than that of the slowly cooled nanocomposite with the same MWCNT loading. This can be attributed to the lower crystallinity and smaller crystallites facilitating the formation of conductive pathways. The tensile properties of the nanocomposite with 2 wt% MWCNTs are also influenced by the compression moulding parameters to some extent, while those of the nanocomposites with higher MWCNT loading are insensitive to the changes in processing conditions. The predicted moduli from Halpin-Tsai and Mori-Tanaka theoretical models show good agreement with the experimental results. This work has important implications for both process control and the tailoring of electrical and mechanical properties in the commercial manufacture of conductive HDPE/MWCNT nanocomposites.

show abstract

Section: The Scaling Law Of Classical Percolation Theory (Equation 4)mentioning

confidence: 99%

Effect of processing conditions on the structure, electrical and mechanical properties of melt mixed high density polyethylene/multi-walled CNT composites in compression molding

Xiang¹,

Guo²,

Kumar

et al. 2017

Materials Testing

View full text Add to dashboard Cite

show abstract

“…The obtained electronic parameters prove that PVDF-PAN/MWCNTs exhibit organic semiconductor behavior. In particular, compared with other spherical-shaped conductive filling materials such as carbon black, MWCNTs with large length/diameter aspect ratios help the composite system show a high electric conductivity at low concentrations due to their low percolation threshold [47,48]. However, Carabineiro et al [49] observed that the conductivity of the PVDF-MWCNTs further increased by nearly three orders of magnitude, from order of 10 −7 S/cm to order of 10 −4 S/cm, by the increased concentration of the MWCNTs.…”

Section: Resultsmentioning

confidence: 99%

Polyvinylidene fluoride (PVDF)/polyacrylonitrile (PAN)/carbon nanotube nanocomposites for energy storage and conversion

Aqeel

Huang

Walton

et al. 2017

Adv Compos Hybrid Mater

View full text Add to dashboard Cite

Polyvinylidene fluoride (PVDF)/polyacrilonitrile (PAN)/multiwalled carbon nanotubes functionalized COOH (MWCNTs-COOH) nanocomposites with different contents of MWCNTs were fabricated by using electrospinning and solution cast methods. The interaction of the MWCNTs with the polymer blend was confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The dispersion of the MWCNTs in the polymer blend was studied by scanning electron microscopy. The dispersion of the MWCNTs in the polymer matrix at different compositions has been examined by using scanning electron microscopy (SEM). Both individual and agglomerations of MWCNTs were evident. Multiwalled carbon nanotubes are capable of enhancing the impedance and electrical conductivity of PVDF-PAN/MWCNTs in a wide frequency range at different temperatures. Nanocomposites based on PVDF/PAN and MWCNTs as fillers show a significant enhancement in the electrical conductivity as a function of temperature. In addition, PVDF/PAN with 5.58 wt.% of MWCNTs has a much higher specific energy (129.7Wh/kg) compared to that of PVDF/PAN (15.57 Wh/kg).The results reveal that PVDF/PAN/MWCNTs composites have potential applications for nanogenerators, organic semiconductors, transducers, and electrical energy storage.

show abstract

“…In ref. (Du et al, 2011) two types of segregated structures based on MWCNT and graphite nanosheets (GNS) formed in HDPE matrix were compared. Lower value of percolation threshold (φ c =0.15 %) and higher conductivity was revealed in the MWCNT/HDPE composites in comparison with the GNS/HDPE composites (φ c =1 %).…”

Section: Carbon Nanotubes In Segregated Systemsmentioning

confidence: 99%

Carbon Nanotubes as Conductive Filler in Segregated Polymer Composites - Electrical Properties

Mamunya¹

2011

Carbon Nanotubes - Polymer Nanocomposites

View full text Add to dashboard Cite

Comparison of electrical properties between multi-walled carbon nanotube and graphene nanosheet/high density polyethylene composites with a segregated network structure

Cited by 387 publications

References 44 publications

Effect of processing conditions on the structure, electrical and mechanical properties of melt mixed high density polyethylene/multi-walled CNT composites in compression molding

Effect of processing conditions on the structure, electrical and mechanical properties of melt mixed high density polyethylene/multi-walled CNT composites in compression molding

Polyvinylidene fluoride (PVDF)/polyacrylonitrile (PAN)/carbon nanotube nanocomposites for energy storage and conversion

Carbon Nanotubes as Conductive Filler in Segregated Polymer Composites - Electrical Properties

Contact Info

Product

Resources

About