Walled Carbon Nanotubes (95%, OD:10-20nm, Length:3-8µm)

Walled Carbon Nanotubes

Product: Walled Carbon Nanotubes

Description: A unique type of carbon nanotubes with 2 to 5 layers of sidewalls and diameters less than 10 nm was synthesized by the thermal chemical vapor deposition (CVD)method with MgO supported Fe/Mo catalyst. Unlike the typical CVD grown multi-walled carbon nanotubes, these few-walled carbon nanotubes (FWNTs)have a high degree of structural perfection. They have enhanced electron field emission characteristics compared to the current commercial nanotubes, with a low threshold field for emission and improved emission stability

Few Walled Carbon Nanotubes

Multi walled Carbon Nanotube

FTIR Spectra Few Walled Carbon Nanotubes

FTIR Spectra of Few Walled Carbon Nanotubes

Materials Few Walled Carbon Nanotubes
Stock No NS6130-06-641
CAS 308068-56-6 Confirm
Category M-SL-2 Confirm
Diameter 10-20nm Confirm
Length 3-8μm Confirm
Purity >90% (MWNT) Confirm
Amorphous carbon <5% Confirm
Residue ( calcination in air) <2% Confirm
Average interlayer distance 0.34nm Confirm
Special surface area 90-350* m²/g Confirm
Bulk density 0.05-0.17 g/cm³ Confirm
Real density 1-2 g/cm³ Confirm
Charging * 2180 (Capacity: mA h/g) Confirm
Discharging* 534 (Capacity: mA h/g) Confirm
Volume Resistivity 0.1-0.15 Ω.cm ( measured at pressure in
Available Quantities 10Gms, 25Gms, 50Gms, 100Gms and larger quantites
Main Inspect Verifier Manager QC

Experts Review:

5454Dr. Ms. Kelley Johnson, Ph.D (Adam Mickiewicz University in Poznań, Poland)
Multi walled carbon nanotubes consists of multiple rolled layers (concentric tubes) of graphite.  Their diameter is 3-30 nm and they can grow various cm long, thus their aspect ratio can vary between 10 and ten million. MWCNT  have Russian –doll Structure, rigidity, smaller outer diameter, different wall structure, and hollow interior.

imagesDr. Richard Harper, Ph.D (National Polytechnic Institute (IPN), Mexico)
MWNTs are highly conductive when properly integrated into a composite structure. The outer wall alone is conducting, the inner walls are not significant to conductivity. MWNTs have a high aspect ratio with lengths typically more than 100 times the diameter, and much higher. Their performance and application is based not just on aspect ratio, but also on the degree of entanglement and the straightness of the tubes, which in turn is a function of the both the degree and dimension of defects in the tubes.

WQDr. Juan Yang (Seoul National University Seoul, South Korea)
MWNTs  with no defects have an excellent tensile strength and when integrated into a composite, such as a thermoplastic or thermoset compounds, can significantly increase its strength. MWNTs have a thermal stability more than 600 °C, based on the level of defects and to certain extent on the purity as residual catalyst in the product can also catalyze decomposition.

aaaaaDr. Steve Chesney, Ph.D (Ludwig Maximilian University of Munich,Germany)
MWNTs are an allotrope of sp2 hybridized carbon similar to graphite and fullerenes and as such have high chemical stability. To enhance the both Strength and dispersibility of composites one can functionalize the nanotubes.

DrLiDr. Ms. Mia Liao (National Taipei University of Technology, Taiwan)
MWNTs are suitable for various applications  due to its high conductivity and high aspect ratio. The needed conductivity level can be achieved with much lesser loadings than for conventional solutions such as metal particulates or carbon black. Applications are:  electrostatic discharge protection in wafer processing fabrication, antistatic elastomeric and plastic components for automobile fuel line components, plastics rendered conductive to enable electrostatic spray painting of automobile body parts, RFI shielding materials, etc.

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Few Walled Carbon Nanotubes

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