Multi Walled Carbon Nanotubes

Multi Walled Carbon Nanotubes

As the name suggests, the Multi Walled Carbon Nanotubes (MWCNTs) made from carbon tubular concentric tunnels with around 10-9mm diameter. It is a composite structure of concentrically layered carbon nanotubes nested in each other. It is an allotrope of carbon (i.e., graphene), one of the most robust materials for many purposes and applications. The MWCNTs are highly resistant to chemicals and do not produce heat. Therefore, they are mainly used in many devices that tend to heat up for longer hours. Being highly conductive, they are remarkable in exhibiting electricity.
MWCNTs Structure

An MWCNTs consists of a minimum of 3 and a maximum of 20 nanotubes. Similarly, the inner nanotube’s minimum diameter is 2 nm, whereas it is 50 nm for the external tube. Multi walled carbon nanotubes suppliers prefer it over the other nanotubes because the quantity produced by this mixture is bulk, and the cost of production is significantly cheaper. We produced this material by using a Catalytic Chemical Vapour Deposition (CCVD) method. The SEM and TEM analysis shows that our MWCNTs materials diameter and length are 5-20 nm and 10 microns, respectively. The purity of the material is more than 99.99%, whereas it contains a negligible amount of impurities.
Properties of Multi Walled Carbon Nanotubes (MWCNT)

Electrical Conductivity: It acts like semiconductors when they are correctly synthesized. The outer layer carries maximum charge while the inner carries none. Therefore, we call it a semiconductor, unlike SWCNT, which has only one layer and is highly conductive.

Tensile Strength: The Multi walled carbon nanotubes manufacturers favor them highly because of their tensile strength, which is about 0.15 TPa. Being an allotrope of carbon, they have high tensile strength while being stronger than steel.

Weight: It is strong and very light in weight. These qualities attract a strong inclination of scientists and industrialists towards MWCNTs.

Resistance: Usually, we use the allotrope of sp2-hybridized carbon to make Multi-walled carbon nanotubes. Thus, they are highly resistant to chemicals. Moreover, they show excellent resistance to heat as a pure CNTs composition can tolerate a temperature of about 600˚ C.

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thought this material cause cancer on laboratory rodents/