What is functionalized carbon nanotubes?

Functionalized CNTs are promising novel materials for a variety of biomedical applications. These potential applications are particularly enhanced by their ability to penetrate biological membranes with relatively low cytotoxicity.

How do you synthesize carbon nanotubes?

CNTs are synthesized by thermal CVD method by using hydrocarbon gas as carbon source. In this method, a quartz tube is placed inside a furnace maintained at high temperature (500–900°C) heated by RF heater.

Is carbon nanotube applicable to nanotechnology?

The strength and flexibility of carbon nanotubes makes them of potential use in controlling other nanoscale structures, which suggests they will have an important role in nanotechnology engineering. The highest tensile strength of an individual multi-walled carbon nanotube has been tested to be 63 GPa.

How do you separate carbon nanotubes?

Physical Methods for Separation of Carbon Nanotubes Charged biological macromolecules are commonly separated by electrophoresis using gel in an electric field.

How can carbon nanotubes be functionalized?

Chemical functionalization is based on the covalent bond of functional groups onto carbon form of CNTs. It can be performed at the end caps of nanotubes or at their sidewalls which have many defects. This process can be made by reaction with some molecules of a high chemical reactivity.

What are carbon nanoparticles used for?

Carbon nanoparticles can be used for the delivery of drugs at a cellular level. One research team used carbon nanoparticles created through basic means to deliver infusions of drugs to a pig. The conclusion from that experiment is that carbon nanoparticles could be used to deliver a variety of drugs to treat cancer.

What can carbon nanotubes be used for?

Carbon nanotubes have been first used as additives to various structural materials for electronics, optics, plastics, and other materials of nanotechnology fields. Since the beginning of the 21st century, they have been introduced in pharmacy and medicine for drug delivery system in therapeutics.

Why do we need to functionalize carbon nanotubes?

The advantage of non-covalent functionalization is that it does not destroy the conjugated system of the CNTs sidewalls, and therefore it does not affect the final structural properties of the material. The non-covalent functionalization is an alternative method for tuning the interfacial properties of nanotubes.

Where can carbon nanotubes be used?

As of 2013, carbon nanotube production exceeded several thousand tons per year, used for applications in energy storage, device modelling, automotive parts, boat hulls, sporting goods, water filters, thin-film electronics, coatings, actuators and electromagnetic shields.

What can be done with carbon nanotube composites?

Progress in polymer/carbon nanotube composite research considered here will included studies on functionalization of CNTs their mechanical, electrical conductivity and optical properties, and applications of polymer/CNT composites. 2. Functionalization of CNT

Are there any nanocomposites that use CNTs as filler?

Ajayan et al. [26] reported the first polymer nanocomposites using CNTs as a filler. The number of articles and patents in polymer composites containing CNTs is increasing every year [27].

Why are non covalent functionalization of nanotubes so important?

Non-covalent functionalization of nanotubes is of particular interest because it does not compromise the physical properties of CNTs, but improves solubility and processability. This type of functionalization mainly involves surfactants, biomacromolecules or wrapping with polymers ( Table 2 ).