scholarly journals Carbon Nanotube and Graphene Based Polyamide Electrospun Nanocomposites: A Review

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Fabiola Navarro-Pardo ◽  
Ana L. Martinez-Hernandez ◽  
Carlos Velasco-Santos
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Research Groups ◽  
Potential Applications ◽  
Versatile Technique

Electrospinning is a unique and versatile technique to produce nanofibres; the facility to incorporate fillers has expanded its range of applications. This review gives a brief description of the process and the different polymers employed for obtaining nanofibres. Owing to the ability of fibrillation of polyamides, these polymers have resulted in a wide variety of interesting results obtained when using this technique; therefore these features are summarised. Additionally, because of the feasibility of incorporating carbon nanotubes and graphene in these nanofibres and the growing interest on these nanomaterials, this review focuses in the most common methods employed for their incorporation in electrospun polyamides. Several equipment setups used for the electrospinning of the nanofibres are explained. The outstanding electrical, optical, crystallinity, and mechanical properties obtained by a number of research groups are discussed. The potential applications of the resulting nanocomposites have also been explored.

Mechanical Properties Of Polyaniline / Multi-walled Carbon Nanotube Composite Films

2003 ◽  
Vol 791 ◽  
Author(s):  
P. C. Ramamurthy ◽  
W. R. Harrell ◽  
R. V. Gregory ◽  
B. Sadanadan ◽  
A. M. Rao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Films ◽  
Weight Percent ◽  
Organic Electronic Devices ◽  
Multiwalled Carbon ◽  
Multi Walled Carbon Nanotube ◽  
Contact Devices ◽  
Carbon Nanotube Composite

ABSTRACTHigh molecular weight polyaniline / multi-walled carbon nanotube composite films were fabricated using solution processing. Composite films with various weight percentages of multiwalled carbon nanotubes were fabricated. Physical properties of these composites were analyzed by thermogravimetric analysis, tensile testing, and scanning electron microscopy. These results indicate that the addition of multiwalled nanotubes to polyaniline significantly enhances the mechanical properties of the films. In addition, metal–semiconductor (composite) (MS) contact devices were fabricated, and it was observed that the current level in the films increased with increasing multiwalled nanotube content. Furthermore, it was observed that polyaniline containing one weight percent of carbon nanotubes appears to be the most promising composition for applications in organic electronic devices.

Electronic and Mechanical Properties of Super Carbon Nanotube Networks

2006 ◽  
Vol 963 ◽  
Author(s):  
Vitor R. Coluci ◽  
Socrates O. Dantas ◽  
Ado Jorio ◽  
Douglas s Galvao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Tight Binding ◽  
Deformation Mechanisms ◽  
Different Types ◽  
Dynamics Simulations ◽  
Walled Carbon Nanotubes ◽  
Carbon Nanotube Networks ◽  
Main Deformation

ABSTRACTEletronic and mechanical properties of ordered carbon nanotube networks are studied using molecular dynamics simulations and tight-binding calculations. These networks are formed by single walled carbon nanotubes (SWNT) regularly connected by junctions. The use of different types of junctions (“Y”-, “X”-like junctions, for example) allows the construction of networks with different symmetries. These networks can be very flexible and the elastic deformation was associated with two main deformation mechanisms (bending and stretching ) of the constituents SWNTs. Rolling up the networks, “super” carbon nanotubes can be constructed. These super-tubes share some of the main electronic features of the SWNT which form them but important changes are predicted (e.g. reduction of bandgap value). Simulations of their deformations under tensile stress have revealed that the super-tubes are softer than the corresponding SWNT and that their rupture occur in higher strain values.

The influence of functionalization time of carbon nanotube on the mechanical properties of the epoxy composites

2017 ◽  
Vol 51 (12) ◽  
pp. 1693-1701 ◽  
Author(s):  
EA Zakharychev ◽  
EN Razov ◽  
Yu D Semchikov ◽  
NS Zakharycheva ◽  
MA Kabina
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Polymer Composites ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This paper investigates the structure, length, and percentage of functional groups of multi-walled carbon nanotubes (CNT) depending on the time taken for functionalization in HNO3 and H2SO4 mixture. The carbon nanotube content and influence of functionalization time on mechanical properties of polymer composite materials based on epoxy matrix are studied. The extreme dependencies of mechanical properties of carbon nanotube functionalization time of polymer composites were established. The rise in tensile strength of obtained composites reaches 102% and elastic modulus reaches 227% as compared to that of unfilled polymer. The composites exhibited best mechanical properties by including carbon nanotube with 0.5 h functionalization time.

Characterization of Mechanical Properties of Carbon Nanotubes in Copper-Matrix Nanocomposites

2006 ◽  
Author(s):  
Seunghyun Baik ◽  
Byeongsoo Lim ◽  
Bumjoon Kim ◽  
Untae Sim ◽  
Seyoung Oh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Pure Copper ◽  
Copper Matrix ◽  
Mixing Process ◽  
Mechanical Mixing ◽  
Matrix Nanocomposites ◽  
Coated Carbon

Carbon nanotubes have received considerable attention because of their excellent mechanical properties. In this study, carbon nanotube - copper composites have been sintered by a mechanical mixing process. The interfacial bonding between nanotubes and the copper matrix was improved by coating nanotubes with nickel. Sintered pure copper samples were used as control materials. The displacement rate of nanotube-copper composites was found to increase at 200°C whereas that of nickel-coated nanotue-copper composites significantly decreased. The incorporation of carbon nanotubes and nickel-coated carbon nanotubes in the copper matrix decreased friction coefficients and increased the time up to the onset of scuffing compared with those of pure copper specimens.

scholarly journals Highly Conductive Carbon Nanotube-Thermoplastic Polyurethane Nanocomposite for Smart Clothing Applications and Beyond

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1287 ◽  
Author(s):  
Sandra Lepak-Kuc ◽  
Bartłomiej Podsiadły ◽  
Andrzej Skalski ◽  
Daniel Janczak ◽  
Małgorzata Jakubowska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Thermoplastic Polyurethane ◽  
Polyurethane Elastomer ◽  
Light Weight ◽  
Composite Fibers ◽  
Smart Clothing ◽  
Potential Applications ◽  
Order Of Magnitude ◽  
Method Of Production

The following paper presents a simple, inexpensive and scalable method of production of carbon nanotube-polyurethane elastomer composite. The new method enables the formation of fibers with 40% w/w of nanotubes in a polymer. Thanks to the 8 times higher content of nanotubes than previously reported for such composites, over an order of magnitude higher electrical conductivity is also observed. The composite fibers are highly elastic and both their electrical and mechanical properties may be easily controlled by changing the nanotubes content in the composite. It is shown that these composite fibers may be easily integrated with traditional textiles by sewing or ironing. However, taking into account their light-weight, high conductivity, flexibility and easiness of molding it may be expected that their potential applications are not limited to the smart textiles industry.

Adsorption of Fluoride by Aligned Carbon Nanotubes Supported Ceria Nanoparticles

2007 ◽  
Vol 121-123 ◽  
pp. 1221-1224 ◽  
Author(s):  
Ze Chao Di ◽  
Yan Hui Li ◽  
Xian Jia Peng ◽  
Zhao Kun Luan ◽  
Ji Liang
Keyword(s):  
Heat Treatment ◽  
Carbon Nanotubes ◽  
Drinking Water ◽  
Carbon Nanotube ◽  
Fluoride Concentration ◽  
Ceria Nanoparticles ◽  
Adsorption Effect ◽  
Fluoride Adsorption ◽  
Aligned Carbon Nanotubes ◽  
Potential Applications

Ceria nanoparticles supported on aligned carbon nanotubes (CeO2/ACNTs), a novel adsorbent for fluoride from drinking water, were prepared by chemical reaction of CeCl3 with NaOH on aligned carbon nanotube solution and subsequent heat treatment. The best fluoride adsorption effect of CeO2/ACNTs occurs at pH 4.0 ~ 9.0. The largest adsorption capacity of CeO2/ACNTs reaches 33.7 mg g-1 at an equilibrium fluoride concentration of 18.0 mg l-1 at pH 7.0. The experiment results suggest that CeO2/ACNTs have great potential applications in environmental protection.

Mechanical Properties of Functionalized Carbon Nanotube as Reinforcements

2012 ◽  
Vol 583 ◽  
pp. 22-26 ◽  
Author(s):  
Cui Cui Ling ◽  
Qing Zhong Xue ◽  
Xiao Yan Zhou
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Carbon Nanotube ◽  
Binding Energy ◽  
Functional Groups ◽  
Functional Group ◽  
Young Modulus ◽  
Electrostatic Energy ◽  
Walled Cnts

The effects of functional groups and degree of functionalization on the young modulus of carbon nanotubes (CNTs) are investigated through molecular dynamics and molecular mechanics simulations. It is found that young’s modulus depends greatly on the functional groups and degree of functionalization. The results show that the fluorine (-F) can replace the hydrogen, and young modulus of sing-walled CNTs (SWNT) modified by -F functional group can inherit the mechanical properties of intrinsic SWNT. The binding energy between functional groups and SWNT, and electrostatic energy among the functional groups are mainly responsible for these findings. These characteristics rival those of SWNT modified by hydrogen allow one to consider SWNT modified by -F functional group for a range of technologies, in particular require better inertness and stability than unachievable for the compound.

Evaluation of mechanical and dynamic mechanical properties of multiwalled carbon nanotube-based ethylene–propylene copolymer composites mixed by masterbatch dilution

2016 ◽  
Vol 50 (29) ◽  
pp. 4093-4101 ◽  
Author(s):  
Maija Hoikkanen ◽  
Minna Poikelispää ◽  
Amit Das ◽  
Uta Reuter ◽  
Wilma Dierkes ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Aspect Ratio ◽  
Melt Mixing ◽  
Multiwalled Carbon ◽  
Mixing Processes ◽  
Ethylene Propylene ◽  
Dynamic Mechanical ◽  
Mixing Method

A two-step masterbatch mixing technique was studied for preparation of carbon nanotube-filled ethylene–propylene diene elastomer compounds, and compared to conventional one-step mixing process. In the two-step process, a masterbatch compound with carbon nanotube content of 50 parts per hundred was prepared by melt-mixing ethylene–propylene diene elastomer. This material was then compounded with pristine ethylene–propylene diene elastomer and composites with different carbon nanotube concentrations were compared. The aim of this study is to compare the efficiency of two different mixing processes on the dispersion of carbon nanotubes and to facilitate the handling of carbon nanotubes, as the masterbatch can be prepared in a controlled way and used for further dilution without the problems related to carbon nanotube processing. The compound properties were studied with emphasis on mechanical characterization and dynamic mechanical thermal analysis. Masterbatch mixing resulted in the similar mechanical properties of the composites compared to the direct mixing method. At the relatively low loadings of carbon nanotubes, the considerable improvements of the mechanical properties were observed. The aspect ratio of the carbon nanotubes determined by transmission electron microscope was found to be similar to the one calculated from the Guth equation. It showed a considerable reduction in aspect ratio independent of the used mixing method.

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