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

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

Functional Nanodiamond Internalization Mechanisms and Kinetics

2010 ◽  
Author(s):  
Robert Lam ◽  
Xueqing Zhang ◽  
Mark Chen ◽  
Dean Ho
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Surface Modification ◽  
Aspect Ratio ◽  
Biomedical Applications ◽  
Internalization Mechanism ◽  
Mechanism And Kinetics ◽  
Energy Dependent ◽  
The Relationship ◽  
Kinetics Of

Several reports have described the relationship between size, aspect ratio, surface modification and internalization for a variety of nanoparticles (i.e. gold, polymer, carbon nanotubes). Nanodiamonds (NDs) in particular have recently been implicated in a variety of biomedical applications. One of the most promising is in utilizing NDs as drug delivery carriers where successful internalization is of utmost importance. A few reports recently have demonstrated the energy dependent internalization of bare NDs. In this report, we investigate the internalization mechanism and kinetics of functional ND-conjugate translocation.

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.

scholarly journals Model Progress for Tensile Power of Polymer Nanocomposites Reinforced with Carbon Nanotubes by Percolating Interphase Zone and Network Aspects

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1047 ◽  
Author(s):  
Yasser Zare ◽  
Kyong Yop Rhee
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Aspect Ratio ◽  
Polymer Nanocomposites ◽  
Simple Simulation ◽  
Advanced Model

In the present work, a simple simulation is advanced based on a Callister equation considering the impacts of interphase and carbon nanotube (CNT) nets on the strength of nanocomposites after percolation onset. The advanced model can analyze the strength of nanocomposite by filler aspect ratio (α), percolation beginning ( φ p ), interphase depth (t), interphase power (σi), net density (N), and net power (σN). The empirical consequences of several samples agree with the estimations of the industrialised model. The nanocomposite strength straightly depends on “α”, “t”, “σi”, “N”, and “σN”, while the radius and percolation onset of CNT play the inverse characters. The reasonable impacts of net and interphase possessions on the nanocomposite strength rationalise the accurate progress of the Callister equation.

Influence of filler waviness and aspect ratio on the percolation threshold of carbon nanomaterials reinforced polymer nanocomposites

2013 ◽  
Vol 48 (17) ◽  
pp. 5727-5732 ◽  
Author(s):  
Yong Yu ◽  
Shuangqi Song ◽  
Zhixiang Bu ◽  
Xiaofeng Gu ◽  
Gangbing Song ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Percolation Threshold ◽  
Polymer Nanocomposites ◽  
Carbon Nanomaterials ◽  
Reinforced Polymer

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 Estimating the Thermal Conductivities and Elastic Stiffness of Carbon Nanotubes as a Function of Tube Geometry

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Z. H. Zhang ◽  
N. Yu ◽  
W. H. Chao
Keyword(s):  
Experimental Data ◽  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Present Model ◽  
Elastic Stiffness ◽  
The Other ◽  
Microstructural Parameters ◽  
The Relationship ◽  
Tube Geometry ◽  
Thermal Conductivities

The thermal conductivities and elastic properties of carbon nanotubes (CNTs) are estimated by using the double-inclusion model, which is based on rigorous elasticity approach. The model regards a CNT as one inclusion (the inner cylindrical void) embedded in the other (the outer coaxial single-crystal graphite shell). The concept of homogenization is employed, and vital microstructural parameters, such as CNT diameter, length, and aspect ratio, are included in the present model. The relationship between microstructure and thermal conductivities and elastic stiffness of CNTs is quantitatively characterized. Our analytical results, benchmarked by experimental data, show that the thermal conductivities and elastic stiffness of CNTs are strongly dependent on the diameter of CNT with little dependence on the length of CNT.

3D Simulation Modeling for the Electrical Conductivity of Carbon Nanotube Networks in Polymer Nanocomposites

2021 ◽  
Vol 896 ◽  
pp. 39-44
Author(s):  
Yuan Zheng Luo ◽  
You Qi Wan ◽  
Wei Hong
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Aspect Ratio ◽  
Search Algorithm ◽  
Three Dimensional ◽  
Conductive Network ◽  
Dimethyl Siloxane ◽  
Potential Applications ◽  
The Relationship ◽  
Carbon Nanotube Networks

In this paper, we developed a three-dimensional percolation model to investigate the effects of the concentration and morphology of CNTs (carbon nanotubes) on the electrical conductivity of the nanocomposites. In the model, we judged the connections between CNTs by range search algorithm based on KD-Tree structure. At the same time, DIJKSTRA-Melissa algorithm was applied to efficiently find all the conductive paths instead of finding conductive network in traditional methods. From the simulation results, CNTs with higher aspect ratio were easier to form the conductive network. In a certain range of CNT’s concentration, the relationship between the conductivity of the conductive network and the carbon nanotubes was basically consistent with the classical percolation theory. To verify our simulation model, the morphological, electrical properties of Carbon nanotubes (CNTs)/poly(dimethyl siloxane) (PDMS) nanocomposites with different aspect ratio (AR) of MWNTs were systematically studied. In conclusion, these unique advantageous properties could be exploited to suggest potential applications of artificial electronic skin.

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