Multi-Walled Carbon Nanotubes (MWCNT)
CAS Number 308068-56-6
Anode Materials, Battery Materials, Carbon Nanotubes (CNTs), Low Dimensional Materials, Materials
High Purity MWCNTs with Enhanced Strength and Durability
In powder form for applications to improve mechanical or electrical properties of materials
Product Information | MSDS | MWCNT Derivatives | Related Products
Multi-walled carbon nanotubes (MWCNTs), CAS number 308068-56-6, are a special form of carbon nanotubes in which multiple single-walled carbon nanotubes are nested inside one another. Their attractive mechanical, thermal and electrical properties are a result of their nanoscale tubular structure which consists of a hexagonal lattice of carbon atoms.
MWCNTs are exceptionally strong, with their multiple layers adding stiffness and durability. When used in a material composite they enhance toughness and reliability. MWCNTs are also useful for applications that benefit from increased dispersibility, and also enable reduced costs in synthesis and purification of these materials.
High Purity
>99% MWCNTs
Worldwide Shipping
Quick and reliable shipping
Low Cost
Reduced cost in synthesis
Versatile Applications
Improve mechanical or electrical properties
General Information
| CAS Number | 308068-56-6 |
|---|---|
| Chemical Formula | CxHy |
| Recommended Dispersants | DI Water, DMF, THF, Ethanol, Acetone |
| Synonyms | Multi-Walled Carbon Nanotubes, Multi Wall Carbon Nanotube, Carbon Nanotube, MWNT, MWCNT |
| Classification or Family | 1D materials, Carbon nanomaterials, Nanomaterials, Polycyclic aromatic hydrocarbons, thin-film electronics |
| Colour and Appearance* | Black fibrous powder |
* All our MWCNTs come packed as dry powders, which can be dispersed within your solvent of choice.
Chemical Structure
Product Details
| Product code | M2008D6 | M2008D8 | M2008S1 |
|---|---|---|---|
| Internal Diameter (nm) | 2 – 6 | N/A | N/A |
| Outer Diameter (nm) | 4 – 8 | 10 – 30 | 10 – 30 |
| Length (μm) | 10 – 20 | 5 – 20 | 1 – 2 |
| Specific Surface Area (m2/g) | 330 | 120 – 170 | 120 – 170 |
| Purity (%) | > 96% | 99% | 99% |
Dispersion Guide
Like single walled carbon nanotubes, MWCNT's are insoluble. For dispersing in aqueous solutions we recommend the use of sodium dodecylbenzene sulfonate if an ionic surfactant is suitable if a nonionic surfactant is needed we recommend surfactants with high molecular weights.
- Weigh out the desired amount of nanotubes.
- Mix together your solvent and surfactant of choice at the desired surfactant concentration. This should be below the critical micelle concentration of the surfactant.
- Add the solvent-surfactant mix to the dry powder and shake vigorously to mix.
- Either place an ultrasonic probe into the solution or place the solution into an ultrasonic bath. Be careful about the length of time and power used, as damage to the carbon nanotubes can occur, shortening their average length.
- The resulting solution will be a mixture of suspended nanotubes and bundles of nanotubes, further sonication will help break up the bundles.
- To separate out the individual nanotubes in solution from the bundles the solution should be placed within a centrifuge. If the solution is centrifuged for a longer time and/or at a higher the smaller bundles will be removed narrowing the distribution of suspended nanotubes.
For functionalised nanotubes it is possible to disperse them without the use of any surfactants. However, the total concentration of dispersed nanotubes will be lower.
MSDS Documents
Multi-Walled Carbon Nanotube MSDS Sheet
References
- Thermal and Electrical Conductivity of Single and Multi-Walled Carbon Nanotube-Epoxy Composites, A Moisala et.al., Compos. Sci. Technol., 66, 1285-1288 (2006) DOI: 10.1016/j.compscitech.2005.10.016
- 99.9% Purity Multi-Walled Carbon Nanotubes by Vacuum High-Temperature Annealing, W. Huang, et. al., Carbon, 41, 2585-2590, (2003) DOI: 10.1016/S0008-6223(03)00330-0
- Elastic Moduli of Multi-Walled Carbon Nanotubes and the Effect of Van der Waals Forces, C. Li, et. al., 63, 1517-1524, (2003) DOI: 10.1016/S0266-3538(03)00072-1
MWCNT Derivatives
Multi-walled carbon nanotube derivatives have been developed in order to enhance specific properties. Functionalization of the MWCNT with COOH or OH chemical groups alters surface properties, improving the dispersibility of MWCNT in polar solvents. Nickel coated MWCNT have magnetic properties and graphene CNT composites have improved conductivity.
Related Products
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