High-Strength Composite Fibers: Realizing True Potential of Carbon Nanotubes in Polymer Matrix through Continuous Reticulate Architecture and Molecular Level Couplings

Nano Letters ◽  
2009 ◽  
Vol 9 (8) ◽  
pp. 2855-2861 ◽  
Author(s):  
Wenjun Ma ◽  
Luqi Liu ◽  
Zhong Zhang ◽  
Rong Yang ◽  
Gang Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Molecular Level ◽  
High Strength ◽  
Composite Fibers

scholarly journals Thermal and electrical characterization of polymer/carbon nanotubes composites with polyvinyl butyral matrix

2021 ◽  
Vol 12 (2) ◽  
pp. 98-103
Author(s):  
V. V. Trachevskiy ◽  
◽  
M. T. Kartel ◽  
Wang Bo ◽  
◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Polymer Composites ◽  
Polymer Matrix ◽  
Rapid Development ◽  
Electrical Characterization ◽  
High Strength ◽  
Polyvinyl Butyral ◽  
Modern Technology ◽  
Advantages And Disadvantages

The rapid development of modern technology requires new materials with predetermined properties. There is a need for materials with ultra-high strength, hardness, other characteristics and a common combination of these properties. The work was aimed at solving the problem of creating polymer composite materials that combine high physical and mechanical characteristics and thermal and electrical conductivity. Information was given on fillers, the use of which gives polymers thermal and electrical properties. Shown are the most commonly used in the composition of polymer composites fillers, advantages and disadvantages of each of the fillers. It was established that the use of carbon nanotubes allows obtaining polymer composites with the required performance characteristics. One of the problems when using nanoparticles as modifiers of reactive oligomers is their uniform distribution in the volume of the polymer matrix. Heterogeneity and uneven distribution of the dispersed phase can lead to dangerous defects in the material, so the technology of combining the nanofillers and the polymer matrix plays an important role. The possibility of obtaining polyvinyl butyral structured with carbon nanotubes in the process of its synthesis in the presence of carbon nanotubes was shown and the technological conditions of In situ synthesis are developed. Experimental samples of polyvinyl butyral structured with carbon nanotubes with high thermal and electrically conductive characteristics were obtained. Under optimal conditions of synthesis, in the obtained PVB samples structured with carbon nanotubes, the electrical conductivity of the composite increases by five orders of magnitude due to the high electrical conductivity of CNTs. For the obtained PVB, structured with carbon nanotubes, the fracture stress was significantly (by 62 %) increased, and the fracture deformation is reduced by approximately 38 %. The decrease in the deformation of the fracture during compression indicates an increase in the fragility of the polymer with the inclusion of CNTs. The prospects for the synthesis of polyvinyl butyral in the presence of carbon nanotubes to obtain a composite with a high level of achieved electrical and thermal conductivity were shown.

scholarly journals Условия получения высокомодульных нанокомпозитов полимер/углеродные нанотрубки

2021 ◽  
Vol 91 (3) ◽  
pp. 440
Author(s):  
Г.В. Козлов ◽  
И.В. Долбин
Keyword(s):  
Carbon Nanotubes ◽  
Fractal Dimension ◽  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Polymer Matrix ◽  
Mechanical Characteristics ◽  
High Strength ◽  
High Modulus ◽  
Positive Effects ◽  
Main Factors

The physical basis of realization of high-modulus and high-strength nanocomposites polymer/carbon nanotube, having mechanical characteristics comparable with the same ones for steel, were considered. Two main factors, allowing to create such nanocomposites, were defined – the structure of nanofiller in polymer matrix and large enough content of nanofiller. The indicated structure fractal dimension should be close to dimension of surrounding Euclidean space, i.e. three one. Besides, elastic modulus of nanofiller depends on stiffness of polymer matrix. Therefore additional drawing of nanocomposite gives two positive effects: reduction of waviness of carbon nanotubes and enhancement of elastic modulus of polymer matrix owing to orientation of its macromolecules.

A Molecular‐Level Interface Design Enabled High‐Strength and High‐Toughness Carbon Nanotube Buckypaper

2021 ◽  
pp. 2100244
Author(s):  
Lulu Shen ◽  
Yushun Zhao ◽  
Peter Samora Owuor ◽  
Chao Wang ◽  
Chao Sui ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Interface Design ◽  
Molecular Level ◽  
High Strength ◽  
High Toughness

Comprehensive review on carbon nanotubes embedded in different metal and polymer matrix: fabrications and applications

2021 ◽  
pp. 1-28
Author(s):  
Fahad Saleem Ahmed Khan ◽  
N. M. Mubarak ◽  
Mohammad Khalid ◽  
Mohammad Mansoob Khan ◽  
Yie Hua Tan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Comprehensive Review

scholarly journals Progress in Research on Carbon Nanotubes Reinforced Cementitious Composites

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Qinghua Li ◽  
Jintao Liu ◽  
Shilang Xu
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
High Strength ◽  
Cementitious Composites ◽  
Scale Production ◽  
Multiwalled Carbon ◽  
Factors Affecting ◽  
Environment And Health ◽  
Research Activities ◽  
Major Factors

As one-dimensional (1D) nanofiber, carbon nanotubes (CNTs) have been widely used to improve the performance of nanocomposites due to their high strength, small dimensions, and remarkable physical properties. Progress in the field of CNTs presents a potential opportunity to enhance cementitious composites at the nanoscale. In this review, current research activities and key advances on multiwalled carbon nanotubes (MWCNTs) reinforced cementitious composites are summarized, including the effect of MWCNTs on modulus of elasticity, porosity, fracture, and mechanical and microstructure properties of cement-based composites. The issues about the improvement mechanisms, MWCNTs dispersion methods, and the major factors affecting the mechanical properties of composites are discussed. In addition, large-scale production methods of MWCNTs and the effects of CNTs on environment and health are also summarized.

Facile fabrication of PVA composite fibers with high fraction of multiwalled carbon nanotubes by gel spinning

2017 ◽  
Vol 58 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Yizhe Wei ◽  
Dengpan Lai ◽  
Liming Zou ◽  
Xinlong Ling ◽  
Hongwei Lu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Composite Fibers ◽  
Gel Spinning ◽  
Multiwalled Carbon ◽  
Facile Fabrication ◽  
High Fraction

Effect of carbon nanotubes modified with different concentrations of rare earth lanthanum on the mechanical and tribological properties of epoxy composites

2021 ◽  
pp. 002199832098764
Author(s):  
Mingren Jiang ◽  
Xianhua Cheng
Keyword(s):  
Carbon Nanotubes ◽  
Rare Earth ◽  
Polymer Matrix ◽  
Photoelectron Spectroscopy ◽  
Polymer Matrix Composites ◽  
Testing Machine ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
The Coefficient Of Friction ◽  
The Rare Earth

Rare earth modified acidified carbon nanotubes were prepared by functionalization of acidified carbon nanotubes with different concentrations of LaCl3. The modification results were characterized by Fourier-transform infrared and X-ray photoelectron spectroscopy. The rare earth successfully increases the surface activity of the acidified carbon nanotubes. Polymer matrix composites were prepared by using the rare earth modified acidified carbon nanotubes as the reinforcement in epoxy matrix. Mechanical properties were analyzed by Zwick Z100 testing machine and the tribological behaviors were test by multifunctional tribological tester. Compared with pure epoxy (epoxy resin), the mechanical strength of the best composite sample was increased by 50–120%, the coefficient of friction was reduced by 19.4% and the wear rate was reduced by approximately 40 times. The experimental results show that the RE concentration of 0.2–0.3 wt% has the most obvious influence on the properties of polymer composites. The mechanism of rare earth reinforcement in polymer matrix is analyzed and suggested.

Recent advances in multivalent carbon nanoform-based glycoconjugates

2021 ◽  
Vol 28 ◽  
Author(s):  
Javier Ramos-Soriano ◽  
Mattia Ghirardello ◽  
M. Carmen Galan
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Level ◽  
Biological Processes ◽  
Biologically Relevant ◽  
Disease Mechanisms ◽  
Recent Advances

: Multivalent carbohydrate-mediated interactions are fundamental to many biological processes, including disease mechanisms. To study these significant glycan-mediated interactions at a molecular level, carbon nanoforms such as fullerenes, carbon nanotubes, or graphene and their derivatives have been identified as promising biocompatible scaffolds that can mimic the multivalent presentation of biologically relevant glycans. In this minireview, we will summarize the most relevant examples of the last few years in the context of their applications.

Multiwall carbon nanotubes: A review on synthesis and applications

2021 ◽  
Vol 11 ◽  
Author(s):  
Manisha Vijay Makwana ◽  
Ajay M Patel
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Arc Discharge ◽  
Multiwall Carbon Nanotubes ◽  
High Strength ◽  
Energy Storage And Conversion ◽  
Synthesis Methods ◽  
Mechanical And Thermal Properties ◽  
Nano Materials ◽  
Flexible Sensors

: MWCNTs are elongated cylindrical nanoobjects made of sp2 carbon. They have a diameter of 3–30 nm and can grow to be several centimetres long. Therefore, their aspect ratio can range between 10 to 10 million. Carbon nanotubes are the foundation of nanotechnology. It is an exceptionally fascinating material. CNTs possess excellent properties such as mechanical, electrical, thermal, high adsorption, outstanding stiffness, high strength and low density with a high aspect ratio. These properties can be useful in the fabrication of revolutionary smart nano materials. Demand for lighter and more robust nano materials in different applications of nanotechnology is increasing every day. Various synthesis techniques for the fabrication of MWCNTs, such as CVD, Arc discharge, flame synthesis, laser ablation, and spray pyrolysis, are discussed in this review article, as are their recent applications in a variety of significant fields. The first section presents a brief introduction of CNTs, then the descriptions of synthesis methods and various applications of MWCNTs in the field of energy storage and conversion, biomedical, water treatment, drug delivery, biosensors, bucky papers and resonance-based biosensors are introduced in the second section. Due to their improved electrical, mechanical, and thermal properties, MWCNTs have been extensively used in the manufacturing and deployment of flexible sensors.

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