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    Carbon black in tires, quantum dots in LEDs or titanium nitride in PET bottles ...
    Our knowledge base provides information on products and applications of nanomaterials, illuminates health and environmental aspects.

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    News and information around the topic of nanotechnology.

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  • Research

    Research regarding the impacts of nanoparticles on people and the environment is needed. The German Federal Ministry of Education and Research funds projects to fill knowledge gaps and to initiate measures to identify and minimize risk.

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  • Nano Basics

    Basic information about nanomaterials for humans and the environment.

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Welcome to DaNa2.0 (Data and knowledge on Nanomaterials)

What exactly are nanoparticles? What is meant by “exposure”? When do toxicologists speak of a risk? This and many more questions regarding research on safety aspects of nanomaterials are answered here: www.nanoobjects.info

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Since the discovery of carbon nanotubes (CNTs) in 1991, this group of carbon molecules has been considered as a wonder material due to some interesting properties. They are stronger than steel but very light in weight. Depending on the production method, the nanotubes can be conducting in nature, semi-conducting or even isolating, which makes this material very interesting for the electronic industry. But up to now production volumes of carbon nanotubes are still very low.

Hightech Bicycle © Robert Neumann / fotolia.com

 

How can I come into contact with this material?

Since carbon nanotubes are produced in very low amounts and since their application is limited, the chance of direct contact of humans with these nanotubes is low. Carbon nanotubes are used in some composite materials or electronic components. Since there is no release of nanotubes from these products under normal circumstances there exists only a small chance of getting into contact with once the products are disposed of at the end of the products' life cycle.

 

Is there any risk from this material to humans and the environment?

Due to their long and fibre-like structure carbon nanotubes may elicit fibre-like (adverse) biological effects in the lung which is why they have been thoroughly investigated from the beginning. A general principle is that fibre-like materials can cause lung problems if the fibres are longer than 15-20 micrometres (one fourth to one third of a diameter of a human hair). Fibres with such length are well-known to cause adverse effects in the lung inducing lung inflammation and lung tumours (asbestosis-like disease). This principle also applies to carbon nanotubes with a similar length and rigidity. The clearance mechanisms of the lung can't cope with such long and stiff materials causing a permanent inflammation of the affected tissue(s) which may then lead to tumour formation after a prolonged period of time (20 to 30 years).

 

Conclusion

Due to the low production volume of carbon nanotubes there is unlikely to be significant negative influences for humans and the environment. The situation may change however if the worldwide production volumes increase significantly due to new applications and new products containing carbon nanotubes.

 

By the way...

  • In 2013 the Bayer Group closed its production site for carbon nanotubes due to economic reasons.

 

Current Research

Graphene interlayer © bonninturina / fotolia.com

Information on the sponsorship programmes of the German Federal Ministry of Education and Research on nanotechnologies for humans and the environment.

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Knowledge Base

nano © eccolo / fotolia.com

A database with important and generally understandable aspects on health and environment of applied nanomaterials as well as facts on the safety of manufactured nanomaterials.

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Nano Basics

Graphene © arsdigital / fotolia.com

The chapters on release, exposure, uptake and behavior of nanomaterials in the human body and in the environment as well as the risk assessment will give you a first overview.

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