scholarly journals Modeling the effect of interfacial conductivity between polymer matrix and carbon nanotubes on the electrical conductivity of nanocomposites

RSC Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 424-433
Author(s):  
Yasser Zare ◽  
Kyong Yop Rhee
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Polymer Matrix ◽  
Simple Equations

This article presents the role of interfacial conductivity between the polymer matrix and nanoparticles in the electrical conductivity of polymer carbon nanotube (CNT) nanocomposites (PCNT) by simple equations.

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.

Future trends in carbon nanotubes: Process towards a viable biomedical solution

2021 ◽  
Vol 06 ◽  
Author(s):  
Raja Murugesan ◽  
Sureshkumar Raman ◽  
Arun Radhakrishnan
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Biomedical Applications ◽  
Scale Up ◽  
Diagnostic Techniques ◽  
Nano Composite ◽  
Methods Of Synthesis ◽  
In Trans ◽  
Functionalization Of Carbon Nanotubes

Background: Recently, Nanomaterials based nano-composite materials play the role of various field. Especially, Carbon nanotube based materials are involved in the bio-medical applications.Since, their exclusive and exciting property, researchers worldwide have extensively involved in trans-modulating the carbon nanotubes into a viable medico-friendly system. Objective: These active researches paved the path towards targeted drug delivery, diagnostic techniques, and bio-analytical applications. Despite these exciting properties, which accomplish the probable for biomedical applications, they hold Biosafety issues. Methods: This broad-spectrum review has discussed different aspects of carbon nanotubes and carbon nanotube-based systems related to biomedical applications. Results: Adding to this, a short chronological description of these tiny yet powerful particles given, followed by a discussion regarding their types, properties, methods of synthesis, scale-up, purification techniques and characterization aspects of carbon nanotubes. Conclusion: In the later part, the functionalization of carbon nanotubes was reviewed in detail, which is important to make them biocompatible and stable in biological systems and render them a great property of loading various biomolecules diagnostic and therapeutic moieties. Lastly, an inclusive description of the potential biomedical applications has been given followed by insights into the future.

Role of hybrid reinforcement of carbon nanotubes and graphene nanoplatelets on the electrical conductivity of plasma sprayed alumina coating

2018 ◽  
Vol 44 (4) ◽  
pp. 4508-4511 ◽  
Author(s):  
Aminul Islam ◽  
Biswajyoti Mukherjee ◽  
M. Sribalaji ◽  
O.S. Asiq Rahman ◽  
P. Arunkumar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Graphene Nanoplatelets ◽  
Alumina Coating ◽  
Hybrid Reinforcement ◽  
Plasma Sprayed

Role of Multiwall Carbon Nanotubes (MWCNT) on Electrical Conductivity of Polymer Composite as Alternative Materials for Bipolar Plate Fuel Cell

2013 ◽  
Vol 737 ◽  
pp. 183-190 ◽  
Author(s):  
Anne Zulfia ◽  
Sutopo ◽  
Bangkit Indriyana ◽  
M.E. Albar ◽  
S. Rohman
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Multiwall Carbon Nanotubes ◽  
Material Design ◽  
Bipolar Plate ◽  
Multiwall Carbon Nanotube ◽  
Crucial Component ◽  
Carbon Nano Tube ◽  
Multiwall Carbon

Polypropylene can be improved an electrical conductivity by addition of carbon and multiwall carbon nanotube (MWCNT) as well as combination with copper (Cu) powder. Multiwall carbon nanotube used from 0.1 wt%, 0.5 wt% to 1 wt% while the addition of Cu powder into PP/C was various from 0.1 wt%, 0.2wt% to 0.5wt% respectively. This research focuses on material design of composite based on polymer and carbon to improve an electrical conductivity according to electrical conductivity requirement for bipolar plate. Bipolar plate is one of the components in PEMFC constituted a crucial component that collects and transfers electron from the anode to the cathode, therefore it should possess high electrical conductivity. The main discussion in this research is to analyze the role of multiwall carbon nano tube (MWCNT) and copper on electrical conductivity of polymer composites produced. Functional groups analysis using Fourier Transform Infrared Spectroscopy (FTIR) was also carried out to investigate whether carbon has been mixed perfectly within polypropylene. It is found that the effect of adding a small amount of MWCNT and Cu have improved their electrical conductivity of composites up to 15.62 S/cm.

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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