scholarly journals Sintesis Carbon Nanotube (CNT) Menggunakan Prekursor Bahan Alam Serta Modifikasi CNT Sebagai Komposit CNT/Resin Epoksi: Review

2021 ◽  
Vol 6 ◽  
pp. 1
Author(s):  
Putri Ayu Anggoro ◽  
Teguh Endah Saraswati
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Epoxy Resin ◽  
Arc Discharge ◽  
Resin Composite ◽  
Chemical Vapor ◽  
Natural Material ◽  
Simple Method ◽  
Liquid Precursors ◽  
Multi Walled Carbon Nanotubes

<p><em>Carbon Nanotube</em> (CNT) memiliki aplikasi potensial yang luas karena sifat kimia dan fisiknya yang sangat baik. CNT disintesis menggunakan prekursor cair dari bahan alam yang. Prekursor cair dari bahan alam dimungkinkan dapat mengganti prekursor berbasis minyak bumi. Minyak kamper, jarak, kayu putih, dan kelapa sawit digunakan sebagai reservoir karbon untuk menghasilkan CNT berdinding banyak (MWCNT). Berbagai metode telah digunakan untuk menghasilkan CNT, termasuk ablasi laser, <em>arc discharge</em> dan proses deposisi uap kimia (CVD). Ulasan ini menjelaskan pembuatan CNT menggunakan metode CVD dikarenakan metode ini adalah metode yang umum digunakan dan sederhana. MWCNT yang dihasilkan dimodifikasi untuk membentuk komposit dengan resin epoksi.</p><p><strong><em>Synthesis of Carbon Nanotubes (CNT) Using Natural Material Precursors and Modified CNTs as CNT/Epoxy Resin Composite: Review. </em></strong>Carbon Nanotubes (CNT) have wide potential applications due to their excellent chemical and physical properties. CNTs were synthesized using liquid precursors from natural materials possibly replacing petroleum-based precursors. Camphor, jatropha, eucalyptus oil, and palm oil are used as carbon reservoirs to produce multi-walled carbon nanotubes (MWCNT). A variety of methods have been used to produce CNTs, including laser ablation, arc discharge, and chemical vapor deposition (CVD) processes. This mini-review explained the manufacture of CNTs using the CVD method as a commonly used and simple method. The synthesized CNT is then modified to be applied to form a composite with epoxy resin</p>

A Welding Method for Carbon Nanotubes

2010 ◽  
Vol 160-162 ◽  
pp. 737-742 ◽  
Author(s):  
J.W. Zhang ◽  
Zhen Luo ◽  
Y.L. Li ◽  
J.D. Zhu ◽  
J. Hao
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Chemical Vapor ◽  
Optical Microscope ◽  
Weld Strength ◽  
Chemical Vapor Deposition Method ◽  
Welding Method ◽  
Close Proximity ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A simple and reliable welding method was developed to weld carbon nanotubes with the power supply here. The carbon nanotubes were synthesized chemical vapor deposition method and Multi-walled carbon nanotubes was uesd here. Firstly, apply less than 5 V voltages between carbon nanotubes when they were in close proximity under direct view of optical microscope. Then, let carbon nanotube contact with each other and increase the external voltage to 7–8V until carbon nanotube was attached to the end of the other, the two carbon nanotube join into a carbon nanotube. Furthermore, some experiments were implemented to analyze the reliability, the images of the weld joint and the weld strength all indicted this method were reliable.

Absorption and Reflectance Spectra of Microwave Radiation by an Epoxy Resin Composite with Multi-Walled Carbon Nanotubes

2017 ◽  
Vol 84 (4) ◽  
pp. 596-602
Author(s):  
F. F. Komarov ◽  
O. V. Milchanin ◽  
I. D. Parfimovich ◽  
M. V. Grinchenko ◽  
I. N. Parhomenko ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Resin ◽  
Microwave Radiation ◽  
Resin Composite ◽  
Reflectance Spectra ◽  
Epoxy Resin Composite ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Carbon Nanotube-Quicklime Nanocomposites Prepared Using a Nickel Catalyst Supported on Calcium Oxide Derived from Carbonate Stones

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1239 ◽  
Author(s):  
Ruzanna Ibrahim ◽  
Mohd Zobir Hussein ◽  
Nor Azah Yusof ◽  
Fatimah Abu Bakar
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Chemical Vapor ◽  
Good Alternative ◽  
Metal Catalyst ◽  
Nickel Metal ◽  
Carbon Decomposition ◽  
Weight Losses ◽  
Multi Walled Carbon Nanotubes ◽  
Screen Printed

Carbon nanotube-quicklime nanocomposites (CQNs) have been synthesized via the chemical vapor deposition (CVD) of n-hexane using a nickel metal catalyst supported on calcined carbonate stones at temperatures of 600–900 °C. The use of a Ni/CaO(10 wt%) catalyst required temperatures of at least 700 °C to obtain XRD peaks attributable to carbon nanotubes (CNTs). The CQNs prepared using a Ni/CaO catalyst of various Ni contents showed varying diameters and the remaining catalyst metal particles could still be observed in the samples. Thermogravimetric analysis of the CQNs showed that there were two major weight losses due to the amorphous carbon decomposition (300–400 °C) and oxidation of CNTs (400–600 °C). Raman spectroscopy results showed that the CQNs with the highest graphitization were synthesized using Ni/CaO (10 wt%) at 800 °C with an IG/ID ratio of 1.30. The cyclic voltammetry (CV) of screen-printed carbon electrodes (SPCEs) modified with the CQNs showed that the performance of nanocomposite-modified SPCEs were better than bare SPCEs. When compared to carboxylated multi-walled carbon nanotubes or MWNT–COOH-modified SPCEs, the CQNs synthesized using Ni/CaO (10 wt%) at 800 °C gave higher CV peak currents and comparable electron transfer, making it a good alternative for screen-printed electrode modification.

Defect Healing of Carbon Nanotubes by Rapid Vacuum Arc Annealing

2007 ◽  
Vol 1057 ◽  
Author(s):  
Jeff Tsung-Hui Tsai ◽  
Jason Li ◽  
Andy Tseng
Keyword(s):  
Carbon Nanotubes ◽  
Rapid Heating ◽  
Arc Discharge ◽  
Chemical Vapor ◽  
Vacuum Arc ◽  
Discharge System ◽  
Graphitic Structure ◽  
Defect Healing ◽  
Heating And Cooling ◽  
Multi Walled Carbon Nanotubes

ABSTRACTA rapid thermal annealing process is demonstrated for healing the defects in carbon nanotubes using a DC vacuum arc discharge system. Multi-walled carbon nanotubes (MWCNTs) grown by chemical vapor deposition at a relatively low temperature (∼650 °C) showed structural imperfections inside the tubes which are known as "bamboo-like" defects. These defects can be thermally annealed to reconstruct the graphitic structure. A vacuum arc discharge system was used to generate high temperatures (∼1800 °C) followed by rapid cooling. The MWCNTs can be rapidly annealed in such a system by several heating and cooling cycles. The annealed samples were characterized by Raman spectroscopy and transmission electron microscopy. The defects were found to be healed when the environment contained water vapor, indicating that oxygen may play an important role in breaking the imperfect graphitic structure and removing the weakly bonded defects during the rapid heating cycles. After breaking the “bamboo” segment, the graphene shell was then reconstructed during the cooling process to produce multi-shell perfection. This method produces effective defect healing and bamboo structure removal from MWCNTs.

The Effect of Calcination on Multi-Walled Carbon Nanotubes Produced by Dc-Arc Discharge

2008 ◽  
Vol 8 (7) ◽  
pp. 3539-3544 ◽  
Author(s):  
Sreejarani K. Pillai ◽  
Willem G. Augustyn ◽  
Margaretha H. Rossouw ◽  
Robert I. McCrindle
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Structural Integrity ◽  
Arc Discharge ◽  
Simple Method ◽  
Helium Atmosphere ◽  
Different Temperatures ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Dc Arc

Multi-walled carbon nanotubes were synthesized by dc-arc discharge in helium atmosphere and the effect of calcination at different temperatures ranging from 300–600 °C was studied in detail. The degree of degradation to the structural integrity of the multi-walled carbon nanotubes during the thermal process was studied by Raman spectroscopy, Scanning electron microscopy and High resolution transmission electron microscopy. The thermal behaviour of the as prepared and calcined samples was investigated by thermogravimetric analysis. Calcination in air at 400 °C for 2 hours was found to be an efficient and simple method to eliminate carbonaceous impurities from the nanotube bundles with minimal damage to the tube walls and length. The impurities were oxidized at a faster rate when compared to the nanotubes and gave good yield of about 50%. The nanotubes were observed to be damaged at temperature higher than 450 °C. The results show that this method is less destructive when compared liquid phase oxidation with 5 M HNO3.

Nanomechanical Imaging Of Multi-Walled Carbon Nanotubes

2003 ◽  
Vol 778 ◽  
Author(s):  
Lata Muthuswami ◽  
P. M. Ajayan ◽  
R. E. Geer
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Response ◽  
Defect Density ◽  
Arc Discharge ◽  
Contact Stiffness ◽  
Chemical Vapor ◽  
Recent Experimental Data ◽  
Multi Walled Carbon Nanotubes ◽  
Axial Variation ◽  
Walled Carbon Nanotubes

AbstractNanomechanical mapping of individual multi-walled carbon nanotubes (MWNTs) has been undertaken to investigate intra-tube variations of mechanical response. Ultrasonic force microscopy has been used to measure the relative axial and radial variations of contact stiffness of individual MWNTs synthesized using chemical vapor deposition (CVD) and arc-discharge (AD) techniques. For CVD-based MWNTs the contact stiffness of the tube was seen to vary strongly across volume defects (axial variation of the tube radius) and is assumed to result from the high crystalline defect density associated with such radial variations. These observations support recent experimental data of effective Young's modulus inferred from electrostatically-induced nanotube vibration amplitudes.

scholarly journals Electrical Resistance Prediction for Functionalized Multi-Walled Carbon Nanotubes/Epoxy Resin Composite Gasket under Thermal Creep Conditions

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2704 ◽  
Author(s):  
Wenlong Wang ◽  
Xia Yue ◽  
He Huang ◽  
Chao Wang ◽  
Diwei Mo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Resin ◽  
Health Monitoring ◽  
Resin Composite ◽  
Monitoring Systems ◽  
Epoxy Resin Composite ◽  
Multi Walled Carbon Nanotubes ◽  
Health Monitoring Systems ◽  
Walled Carbon Nanotubes

Carbon nanotube-based conductive polymer composites (CPC) showed great potentials for self-sensing and in situ structural health monitoring systems. Prediction of the long-term performance for such materials would be a meaningful topic for engineering design. In this work, the changing behavior of the long-term resistance of a multi-walled carbon nanotubes/epoxy resin composite gasket was studied under different temperature and loading conditions. Glass transition strongly influenced the resistance behavior of the composite during the thermal creep process. Similar to classical Kelvin–Voigt creep model, a model considering both the destruction and recovery processes of the conductive network inside the CPC was established. The long-term resistance variation can be predicted based on the model, and the results provided here may serve as a useful guide for further design of smart engineering structural health monitoring systems.

scholarly journals Morphology of polyamide 6 confined into carbon nanotubes

2015 ◽  
Vol 33 (2) ◽  
pp. 306-311
Author(s):  
Agnieszka Piegat ◽  
Zygmunt Staniszewski ◽  
Artur Poeppel ◽  
Miroslawa El Fray
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
In Situ Polymerization ◽  
Polyamide 6 ◽  
Multiwalled Carbon ◽  
Simple Method ◽  
Melt Compounding ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractThe preparation of polymer nanocomposites filled with carbon nanotubes requires the nanotubes to be uniformly dispersed and compatible with the polymer matrix. In this work we report a preparation method of polyamide 6 (PA 6) based nanocomposite containing multi-walled carbon nanotubes (MWCNT) without any additional surface modification and obtained by in situ polymerization, as a simple method for composites production. The process was assisted by ultrasounds prior to synthesis.With such a method, an interesting morphology of polyamide 6 confined into a multiwalled carbon nanotube as well as grafted on a carbon nanotube surface was observed. For comparative purpose, PA 6 nanocomposites were also prepared from commercially available master batch by melt compounding.

scholarly journals Synthesis and Purification of Carbon Nanotubes

2021 ◽  
Author(s):  
Syed Awais Rouf ◽  
Zahid Usman ◽  
Hafiz Tariq Masood ◽  
Abdul Mannan Majeed ◽  
Mudassira Sarwar ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Synthesis Method ◽  
Single Layer ◽  
Chemical Vapor ◽  
Laser Vaporization ◽  
Advantages And Disadvantages ◽  
Synthesis Techniques ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this chapter, we will evaluate the synthesis and purification of carbon nanotubes. Carbon nanotubes are cylindrical molecules that consists of graphene (rolled up of a single-layer carbon atom). A wide variety of synthesis techniques such as arc discharge synthesis, laser ablation of graphite/laser vaporization synthesis method, chemical vapor deposition (CVD), high pressure carbon monoxide synthesis and flame synthesis techniques, have been implemented to grow single and multi-walled carbon nanotubes for technological applications. All of the above methods exploit transition metals, like iron, cobalt, and nickel, as a catalyst. There are number of methods (filtering, chromatography and centrifugation) used to purify the carbon nanotubes, but the degree of purity remained questionable in these methods. In order to enhance the purification extent, alternate techniques such as Gas phase purification, Liquid phase purification and Purification by Intercalation are introduced. Here we will discuss the advantages and disadvantages of these purification routes. It will help researchers in selecting appropriate and effective method for synthesis and purification of carbon nanotubes.

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