Alignment of Carbon Nanotubes in Carbon Nanotube Fibers Through Nanoparticles: A Route for Controlling Mechanical and Electrical Properties

2017 ◽  
Vol 9 (6) ◽  
pp. 5530-5542 ◽  
Author(s):  
Muhammad Mohsin Hossain ◽  
Md. Akherul Islam ◽  
Hossain Shima ◽  
Mudassir Hasan ◽  
Moonyong Lee
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Mechanical And Electrical Properties ◽  
Carbon Nanotube Fibers

The Influence of Carbon Nanotubes and Reprocessing on the Morphology and Properties of High-Density Polyethylene/Carbon Nanotube Composites

2021 ◽  
pp. 1-31
Author(s):  
Felicia Stan ◽  
Ionut-Laurentiu Sandu ◽  
Adriana-Madalina Constantinescu ◽  
Nicoleta-Violeta Stanciu ◽  
Catalin Fetecau
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Injection Molding ◽  
High Density Polyethylene ◽  
High Density ◽  
Mechanical Degradation ◽  
End User ◽  
Mechanical Recycling ◽  
Mechanical And Electrical Properties

Abstract This study investigates virgin and recycled high-density polyethylene/multi-walled carbon nanotube (HDPE/MWCNT) composites using thermo-physical and mechanical characterization techniques to generate knowledge and understand recyclability of these composites. Firstly, virgin samples with 0.1–5 wt.% of MWCNTs were prepared by injection molding. Then, the HDPE/MWCNT composite waste was mechanically recycled and consecutively reprocessed by injection molding. The experimental results show that the degradation process of the end-user properties (mechanical and electrical properties) depends on the MWCNT wt.%. The higher the carbon nanotube loading, the higher the degradation of the end-user properties. The HDPE/MWCNT composites appear to be resistant to degradation at carbon nanotube loadings below the percolation threshold (which is located around 3 wt.%). In contrast, the recycled HDPE/MWCNT composites with 5 wt.% showed a reduction in viscosity, mechanical and electrical properties with recycling. After four reprocessing cycles, degradation in the Young modulus (−35%), tensile strength (−25%), elongation at break (−60%) and electrical conductivity (−2 orders of magnitude) of the HDPE/MWCNT composite with 5 wt.% was observed as compared with the virgin composite. From an industrial perspective, it is feasible to recycle HDPE/MWCNT composite waste by mechanical recycling and use it to manufacture products with favorable mechanical properties, covering insulating, antistatic and semiconducting ranges depending on the MWCNT loading, owing to the protective effect of carbon nanotubes against thermo-mechanical degradation.

An analytical model and ANN simulation for carbon nanotube based ammonium gas sensors

RSC Advances ◽  
2014 ◽  
Vol 4 (69) ◽  
pp. 36896-36904 ◽  
Author(s):  
Elnaz Akbari ◽  
Zolkafle Buntat ◽  
Aria Enzevaee ◽  
Seyed Javad Mirazimiabarghouei ◽  
Mahdi Bahadoran ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Analytical Model ◽  
Gas Sensors ◽  
Research Projects ◽  
Nano Technology ◽  
Engineering Research ◽  
Mechanical And Electrical Properties

As one of the most interesting advancements in the field of nano technology, carbon nanotubes (CNTs) have been given special attention because of their remarkable mechanical and electrical properties and are being used in many scientific and engineering research projects.

Effects of nitrogen doping from pyrolyzed ionic liquid in carbon nanotube fibers: enhanced mechanical and electrical properties

2015 ◽  
Vol 26 (7) ◽  
pp. 075706 ◽  
Author(s):  
Ok-Kyung Park ◽  
Hwa Jung Kim ◽  
Jun Yeon Hwang ◽  
Seung Min Kim ◽  
Youngjin Jeong ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Nitrogen Doping ◽  
Mechanical And Electrical Properties ◽  
Carbon Nanotube Fibers

A seed-mediated growth of gold nanoparticles inside carbon nanotube fibers for fabrication of multifunctional nanohybrid fibers with enhanced mechanical and electrical properties

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5295-5303 ◽  
Author(s):  
Young-Jin Kim ◽  
Junbeom Park ◽  
Hyeon Su Jeong ◽  
Min Park ◽  
Seulki Baik ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Au Nanoparticle ◽  
Mechanical And Electrical Properties ◽  
Seed Mediated ◽  
Carbon Nanotube Fibers

A seed-mediated growth of Au nanoparticle inside carbon nanotube fibers is investigated to enhance their performance.

The Effect of the Diameter of Carbon Nanotube on the Mechanical and Electrical Properties of Cement Mortar

2017 ◽  
Vol 730 ◽  
pp. 479-485 ◽  
Author(s):  
Yan Feng Wang ◽  
Hui Hu ◽  
Chui Qiang Rong
Keyword(s):  
Carbon Nanotubes ◽  
Compressive Strength ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Cement Mortar ◽  
Multiwall Carbon Nanotubes ◽  
Cement Matrix ◽  
Sem Image ◽  
Surrounding Matrix ◽  
Mechanical And Electrical Properties

Two different diameter carbon nanotubes were incorporated into cement mortar to investigate the effect on mechanical and electrical properties of composites. Cement-based composites have been prepared from Portland cement with various amounts of multiwall carbon nanotubes (MWCNTS), ranging from 0% to 0.3% by cement weight. In this study, effective dispersion of two different diameter MWCNTS in water were achieved by applying ultrasonic energy and in combination with the use of a surfactant. The flexural and compressive strength of mixes were investigated at age 7 and 28 days. The conductivity of composites were conducted by the four probe method at age of 3 day, 7 day,14 day and 28 day. Results indicated that the two carbon nanotubes can improve the flexural and compressive strength of the composites. Furthermore, the well dispersion carbon nanotube solutions can decrease the resistance of the composites as the better conductive networks are formed in the cement matrix, especially at the later ages. Scanning electron microscopy observation used to observe the fracture surface of specimens containing 0% and 0.3wt% nanotubes indicated that the MWCNTS were well dispersed and there were no obvious agglomerates visible in the matrix. The SEM image revealed good bonding between the MWCNTS and the surrounding matrix.

The Influence of Carbon Nanotubes and Reprocessing on the Morphology and Properties of High-Density Polyethylene/Carbon Nanotube Composites

2021 ◽  
Author(s):  
Felicia Stan ◽  
Ionut-Laurentiu Sandu ◽  
Adriana-Madalina Turcanu ◽  
Nicoleta-Violeta Stanciu ◽  
Catalin Fetecau
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Injection Molding ◽  
High Density Polyethylene ◽  
Young Modulus ◽  
High Density ◽  
Mechanical Recycling ◽  
Mechanical And Electrical Properties ◽  
Nanotube Composites

Abstract This study investigates virgin and recycled high-density polyethylene/multi-walled carbon nanotube (HDPE/MWCNT) composites using thermo-physical and mechanical characterization techniques to generate knowledge and understand recyclability of these composites. Firstly, virgin samples with 0.1–5 wt.% of MWCNTs were prepared by injection molding. Then, the HDPE/MWCNT composite waste was mechanically recycled and consecutively reprocessed by injection molding. The experimental results show that, after the first mechanical recycling and reprocessing cycle, the thermal, rheological, mechanical, and electrical properties for the recycled and virgin HDPE/MWCNT composites with 0.1–3 wt.% were rather similar within the experimental error of the measurements. In contrast, the recycled HDPE/MWCNT composites with 5 wt.% showed a reduction in viscosity, mechanical and electrical properties with recycling. After four recycling and reprocessing cycles, degradation in the Young modulus (−35%), tensile strength (−25%), elongation at break (−60%) and electrical conductivity (−2 orders of magnitude) of the HDPE/MWCNT composite with 5 wt.% was observed as compared with the virgin composite. From an industrial perspective, it is feasible to recycle HDPE/MWCNT composite waste by mechanical recycling and use it to manufacture products with favorable mechanical properties, covering insulating, antistatic and semiconducting ranges depending on the MWCNT loading, owing to the protective effect of carbon nanotubes against thermomechanical degradation.

scholarly journals Carbon nanotube enhanced dynamic polymeric materials through macromolecular engineering

2020 ◽  
Vol 1 (5) ◽  
pp. 1071-1076
Author(s):  
Erika B. Stopler ◽  
Obed J. Dodo ◽  
Alexander C. Hull ◽  
Kyle A. Weaver ◽  
Progyateg Chakma ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Polymeric Materials ◽  
Diels Alder ◽  
Polymer Materials ◽  
Self Healing ◽  
Dynamic Matrix ◽  
Mechanical And Electrical Properties

Diels–Alder based dynamic polymer materials are reinforced with carbon nanotubes, to give materials with self-healing properties from the dynamic matrix and with enhanced mechanical and electrical properties from the carbon nanotubes.

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