Supramolecular electrospun nanofibers with high conductivity at ultra-low carbon nanotube content

2016 ◽  
Vol 4 (23) ◽  
pp. 5207-5213 ◽  
Author(s):  
Chih-Chia Cheng ◽  
Yeh-Sheng Wang ◽  
Jem-Kun Chen ◽  
Duu-Jong Lee
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Electrospun Nanofibers ◽  
High Conductivity ◽  
Supramolecular Polymers ◽  
Low Carbon ◽  
High Electrical Conductivity ◽  
Align Carbon Nanotubes

Supramolecular polymers can be used to manipulate and align carbon nanotubes (CNTs) in a nanofiber matrix, resulting in high electrical conductivity at ultra-low CNT content.

High electrical conductivity of double-walled carbon nanotube fibers by hydrogen peroxide treatments

2016 ◽  
Vol 4 (1) ◽  
pp. 74-82 ◽  
Author(s):  
A. Morelos-Gómez ◽  
M. Fujishige ◽  
S. Magdalena Vega-Díaz ◽  
I. Ito ◽  
T. Fukuyo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Small Diameter ◽  
High Electrical Conductivity ◽  
Carbon Nanotube Fibers ◽  
Fiber Sample

H2O2treatment can decrease the electrical resistivity of double walled carbon nanotube fibers. The experimental observations suggest that small diameter carbon nanotubes are removed from the fiber sample.

Study on the Preparation and Properties of Multiwall Carbon Nanotube Reinforced Biodegradable Polymer Blend

2011 ◽  
Vol 239-242 ◽  
pp. 145-149 ◽  
Author(s):  
Hsin Chih Peng ◽  
Chen Feng Kuan ◽  
Chia Hsun Chen ◽  
Kun Chang Lin ◽  
Hsu Chiang Kuan
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Surface Resistance ◽  
Carbon Composites ◽  
Multiwall Carbon Nanotube ◽  
Low Carbon ◽  
High Electrical Conductivity ◽  
Biodegradable Composites ◽  
Multi Walled Carbon Nanotube ◽  
Multiwall Carbon

The preparation of multi-walled carbon nanotube/polylactide (PLA)/Ecoflex® biodegradable composites is described. Three modifiers, maleic anhydride ,methyl methacrylate and vinyltrimethoxysilane , were utilized to modify multiwall carbon nanotube. The dispersion of multi-walled carbon nanotube was enhanced by covalent or hydrogen bonding between modified multi-walled carbon and biodegradable blend. The tensile strengths of pristine PLA/Ecoflex® resin and 4 wt% modified multi-walled carbon composites are 68 kgf/cm2 and 257 kgf/cm2, respectively (representing a difference of 380%). High electrical conductivity can be achieved at a low carbon nanotube loading. When 1wt% modified multi-walled carbon was added to PLA/Ecoflex® matrix, the surface resistance of the composite fell from 1.46×1016 to 7.88 × 102 Ω/Υ (by 1013 order).

scholarly journals Development of Paper Actuators Based on Carbon-Nanotube-Composite Paper

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1463
Author(s):  
Takahiro Ampo ◽  
Takahide Oya
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Carbon Powder ◽  
High Electrical Conductivity ◽  
Soft Actuator ◽  
Highly Efficient ◽  
Semiconducting Properties ◽  
Carbon Nanotube Composite ◽  
Composite Paper

We propose a unique soft actuator—a paper actuator—based on carbon-nanotube-composite paper (CNT-composite paper), which is a composite of carbon nanotubes (CNTs) and paper. CNT-composite paper has highly efficient properties because of the contained CNTs, such as high electrical conductivity and semiconducting properties. We are considering using CNT-composite paper for various devices. In this study, we successfully developed a paper actuator. We determined the structure of the paper actuator by referencing that of bucky-gel actuators. The actuator operates using the force generated by the movement of ions. In addition to making the paper actuator, we also attempted to improve its performance, using pressure as an index and an electronic scale to measure the pressure. We investigated the optimal dispersant for use in paper actuators, expecting the residual dispersant on the CNT-composite paper to affect the performance differently depending on the type of dispersant. Referring to research on bucky-gel actuators, we also found that the addition of carbon powder to the electrode layers is effective in improving the pressure for paper actuators. We believe that the paper actuator could be used in various situations due to its ease of processing.

Nanoelectromagnetic of the N-doped single wall carbon nanotube in the extremely high frequency band

Nanoscale ◽  
2017 ◽  
Vol 9 (37) ◽  
pp. 14192-14200 ◽  
Author(s):  
B. Aïssa ◽  
M. Nedil ◽  
J. Kroeger ◽  
M. I. Hossain ◽  
K. Mahmoud ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Frequency Band ◽  
Electromagnetic Interference ◽  
High Frequency ◽  
High Electrical Conductivity ◽  
High Frequency Band ◽  
High Demand ◽  
Extremely High Frequency ◽  
Minimal Thickness

Materials offering excellent mechanical flexibility, high electrical conductivity and electromagnetic interference (EMI) attenuation with minimal thickness are in high demand, particularly if they can be easily processed into films.

Fabrication of Carbon Nanotube Gas Sensor Using Step-Wise Dielectrophoretic Deposition Onto Interdigitated Pyrolyzed Carbon Electrodes

2021 ◽  
Author(s):  
Taajza Singleton ◽  
Lawrence Kulinsky
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Gas Sensor ◽  
Carbon Electrodes ◽  
Proof Of Concept ◽  
Nitrogen Gas ◽  
Electrical Field ◽  
The Creation ◽  
Field Lines

Abstract Carbon nanotubes (CNTs) have been implemented in the creation of many micro- and nano-devices due to their physical properties such as large volume-to-surface area as well as their high thermal and electrical conductivity. The paper describes a novel dielectrophoretic step-wise deposition of CNTs (that alternates deposition of CNTs and drying steps) between the interdigitated fingers of carbon electrodes. Multiphysics simulation illustrates the physics of CNT alignment along the electrical field lines that forms a basis for dielectrophoretic deposition of CNTs. This fabrication methodology resulted in the creation of a proof-of-concept nitrogen gas sensor.

Conductivity stability and its relationship with the filler network structure of elastomer composites with combined fibrous/layered nickel-coated fillers

RSC Advances ◽  
2014 ◽  
Vol 4 (61) ◽  
pp. 32482-32489 ◽  
Author(s):  
Nanying Ning ◽  
Suting Liu ◽  
Qian Shao ◽  
Shani Yan ◽  
Hua Zou ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Network Structure ◽  
High Conductivity ◽  
High Electrical Conductivity ◽  
Filler Network ◽  
Elastomer Composites

Conductive elastomer composites with high electrical conductivity and high conductivity stability were prepared by using combined fibrous/layered nickel-coated fillers.

scholarly journals Segregated network polymer/carbon nanotubes composites

2004 ◽  
Vol 2 (2) ◽  
pp. 363-370 ◽  
Author(s):  
A. Mierczynska ◽  
J. Friedrich ◽  
H. Maneck ◽  
G. Boiteux ◽  
J. Jeszka
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Percolation Threshold ◽  
Network Formation ◽  
Processing Parameters ◽  
Low Grade ◽  
Single Walled Carbon ◽  
Conductive Composites ◽  
Grade Material

AbstractIn this work we present the preparation of conductive polyethylene/carbon nanotube composites based on the segregated network concept. Attention has been focused on the effect of decreasing the amount of filler necessary to achieve low resistivity. Using high- and low-grade single-walled carbon nanotube materials we obtained conductive composites with a low percolation threshold of 0.5 wt.% for high-grade nanotubes, about 1 wt% for commercial nanotubes and 1.5 wt% for low-grade material. The higher percolation threshold for low-grade material is related to low effectiveness of other carbon fractions in the network formation. The electrical conductivity was measured as a function of the single-walled carbon nanotubes content in the polymer matrix and as a function of temperature. It was also found that processing parameters significantly influenced the electrical conductivity of the composites. Raman spectroscopy was applied to study single wall nanotubes in the conductive composites.

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