Speciality Multiwall Carbon Nanotubes (MWCNT) – SMW210 from SWeNT

Table of Contents

Distinguishing Characteristics
Physical Properties and Representative Performance
About Southwest Nanotechnologies


SMW210 is a specialty multiwall carbon nanotube that is mainly intended for imparting conductivity to resins and polymers at minimal loading in cases where cost is critical.

Distinguishing Characteristics

The unique properties of SMW210 are:

  • Is designed and produced for easy dispersibility in polymers and resins
  • Has a small diameter multiwall material with 6 to 8 walls
  • Low Percolation Threshold for electrical conduction
  • High Aspect Ratio

Physical Properties and Representative Performance

The physical properties and representative performance is provided in the table below:

Table 1. Properties of SMW210 MWCNTs

Parameter Typical Values Method
Appearance and Form Black powder  
Bulk Density (Tapped) 0.06 – 0.08 g cm-3  
Moisture Content <5% By weight (TGA)
Carbon Content1 >70% TGA
Residual Mass2 < 30% TGA
Bucky Paper Resistance 800 Ω/D 4-Point Probe3
Average Outer Diameter 10 nm TEM
Average Inner Diameter 4.5 nm TEM
Tube Length ~ 4 µm AFM
Specific Surface Area ~ 350 m2 g-1 BET4


1 Carbon content is determined as the Total Weight – the Residual Mass from TGA (uncorrected for oxidation of the metals)
2 Uncorrected for oxidation of metals
3 Determined on a 16 mm diameter Bucky paper with a CNT coverage of 250 mg m-2
4 Measured on Purified Material SMW200 500 nm

Figure 1. Thermogravimetric Analysis

Figure 2. Diameter Distribution

Figure 3. TEM image

About Southwest Nanotechnologies

SouthWest NanoTechnologies Inc. (SWeNT) produces carbon nanotubes using the patented CoMoCAT® catalytic method in fluidized bed reactors. This results in selective synthesis of single-wall carbon nanotubes and remarkable control of diameter, chirality and purity.

Single-wall carbon nanotubes exhibit unique properties due to their unusual structure. They consist of a hollow cylinder of carbon ~ 1nm in diameter, up to 1,000 times as long as it is wide. This structure has remarkable optical and electronic properties, tremendous strength and flexibility, and high thermal and chemical stability. As a result, carbon nanotubes are expected to have dramatic impact on several industries, including displays, electronics, health care and composites.

SWeNT was founded in April 2001 to commercialize nanotube technology developed by Professor Daniel Resasco at the University of Oklahoma. The CoMoCAT® brand is widely recognized for quality and scalability.

This information has been sourced, reviewed and adapted from materials provided by SouthWest NanoTechnologies (SWeNT).

For more information on this source, please visit SouthWest NanoTechnologies (SWeNT).

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