Article
Article
Carbon black
Article By:
Stevens, David Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada.
Last updated:2014
DOI:https://doi.org/10.1036/1097-8542.108300
A broad designation for a class of solid carbon-based materials with high elemental carbon content produced from the thermal decomposition of hydrocarbons. Carbon blacks can be produced with a range of physical properties tailored to the application. The primary particles are often approximately spherical, with particle sizes ranging from 10 to 100 nm. These primary particles can agglomerate, or “sinter,” during production, forming relatively long chains. Brunauer, Emmett, and Teller (BET) surface areas, calculated from nitrogen-adsorption data, range from approximately 10 to 100 m2/g. Carbon blacks typically have low impurity levels; less than 0.2% ash content is common. In addition to modification of the particle size and agglomerate size, the properties of carbon blacks can be tailored by changing the nature of the surface functional groups. See also: Carbon
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