CARBON NANOTUBES AND ITS APPLICATIONS
types
properties
methods of synthesis
medical applications in drug delivery and cancer treatment
non medical applications such as waste water treatment, solar cells& energy storage.
5. 5
PROPERTIES
1. Strength: Carbon nanotubes are the strongest and stiffest materials yet
discovered in terms of tensile strength and elastic modulus respectively. This
strength results from the covalent sp2 bonds formed between the individual
carbon atoms.
2. Hardness: Standards single-walled carbon nanotubes can withstand a
pressure up to 25 GPa without [plastic/permanent] deformation.
3. Wettability: They exhibiting a superhydrophobic property. By applying a
voltage as low as 1.3V, the extreme water repellant surface can be
switched to a superhydrophilic one.
6. 4. Electrical properties: CNTs with particular combinations (structural parameters indicating how
much the nanotube is twisted) can be highly conducting, and hence can be said to be metallic. Their
conductivity has been shown to be a function of their chirality (degree of twist), as well as their
diameter. CNTs can be either metallic or semi-conducting in their electrical behavior.
5. Thermal properties: The strength of atomic bonds in the carbon nanotubes allows them to withstand
high temperatures. They are very good thermal conductors.
6. Carbon nanotubes are chemically neutral. So they are chemically stable.
Therefore, resist corrosion.
7. Its highly flexible and weightless.
6
13. 13
DRUG DELIVERY
CNT are promising drug delivery platforms that can be functionalized
with a variety of biomolecules. This allows specific or targeted drug
delivery.
