Correlations between Percolation Threshold, Dispersion State, and Aspect Ratio of Carbon Nanotubes

2007 ◽  
Vol 17 (16) ◽  
pp. 3207-3215 ◽  
Author(s):  
J. Li ◽  
P. C. Ma ◽  
W. S. Chow ◽  
C. K. To ◽  
B. Z. Tang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Dispersion State

scholarly journals Percolation and Transport Properties in The Mechanically Deformed Composites Filled with Carbon Nanotubes

2020 ◽  
Vol 10 (4) ◽  
pp. 1315 ◽  
Author(s):  
Artyom Plyushch ◽  
Dmitry Lyakhov ◽  
Mantas Šimėnas ◽  
Dzmitry Bychanok ◽  
Jan Macutkevič ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Material ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Transport Properties ◽  
High Aspect Ratio ◽  
Hard Core ◽  
Mechanical Deformation ◽  
Mean Values ◽  
Isotropic Composite

The conductivity and percolation concentration of the composite material filled with randomly distributed carbon nanotubes were simulated as a function of the mechanical deformation. Nanotubes were modelled as the hard-core ellipsoids of revolution with high aspect ratio. The evident anisotropy was observed in the percolation threshold and conductivity. The minimal mean values of the percolation of 4.6 vol. % and maximal conductivity of 0.74 S/m were found for the isotropic composite. Being slightly aligned, the composite demonstrates lower percolation concentration and conductivity along the orientation of the nanotubes compared to the perpendicular arrangement.

On Refining the Relationship between Aspect Ratio and Percolation Threshold of Practical Carbon Nanotubes/Polymer Nanocomposites

2011 ◽  
Vol 50 (8R) ◽  
pp. 080214 ◽  
Author(s):  
Zhi-Min Dang ◽  
Khurram Shehzad ◽  
Jun-Wei Zha ◽  
Tajamal Hussain ◽  
Nie Jun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Polymer Nanocomposites ◽  
The Relationship

Novel approach to percolation threshold on electrical conductivity of carbon nanotube reinforced nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43418-43428 ◽  
Author(s):  
Xoan F. Sánchez-Romate ◽  
Alberto Jiménez-Suárez ◽  
María Sánchez ◽  
Alfredo Güemes ◽  
Alejandro Ureña
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Analytical Model ◽  
Agglomerate Size ◽  
Novel Approach ◽  
Dispersion State

An analytical model to correlate dispersion state given by waviness, aspect ratio and agglomerate size to the electrical conductivity of CNT nanocomposites is developed.

On Refining the Relationship between Aspect Ratio and Percolation Threshold of Practical Carbon Nanotubes/Polymer Nanocomposites

2011 ◽  
Vol 50 (8) ◽  
pp. 080214 ◽  
Author(s):  
Zhi-Min Dang ◽  
Khurram Shehzad ◽  
Jun-Wei Zha ◽  
Tajamal Hussain ◽  
Nie Jun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Percolation Threshold ◽  
Polymer Nanocomposites ◽  
The Relationship

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

Graphene oxide dispersion state in polystyrene-based composites below percolation threshold via linear melt rheology

2021 ◽  
Vol 60 (4) ◽  
pp. 209-218
Author(s):  
Claudia Dessi ◽  
Leice G. Amurin ◽  
Pablo A. R. Muñoz ◽  
Yuri D. C. de Oliveira ◽  
Guilhermino J. M. Fechine ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Percolation Threshold ◽  
Oxide Dispersion ◽  
Melt Rheology ◽  
Dispersion State

CHARACTERIZATION AND ELECTRICAL PROPERTIES OF ALIGNED CARBON NANOTUBES WITH HIGH ASPECT RATIO

2011 ◽  
Vol 10 (01n02) ◽  
pp. 23-28
Author(s):  
RAVI BHATIA ◽  
V. PRASAD ◽  
M. REGHU
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
High Quality ◽  
Transmission Electron Microscopy Analysis ◽  
Transmission Electron ◽  
Electron Microscopy Analysis ◽  
High Degree

High-quality multiwall carbon nanotubes (MWNTs) were produced by a simple one-step technique. The production of MWNTs was based on thermal decomposition of the mixture of a liquid phase organic compound and ferrocene. High degree of alignment was noticed by scanning electron microscopy. The aspect ratio of as-synthesized MWNTs was quite high (more than 4500). Transmission electron microscopy analysis showed the presence of the catalytic iron nanorods at various lengths of MWNTs. Raman spectroscopy was used to know the quality of MWNTs. The ratio of intensity of the G-peak to the D-peak was very high which revealed high quality of MWNTs. Magnetotransport studies were carried out at low temperature and a negative MR was noticed.

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