Table 4

Comparison between physical and chemical parameters of asbestos and CNTs

Parameter

Comparison


Shape

Both are elongated particles; fibre shaped.


Dimensions

Asbestos fibre diameter: range of 100 nm. Chrysotile fibrils: ≅ 50 nm of diameter. Same order as MWCNTs.


Structure

Chrysotile: multi-layered rolled sheets of brucite (MgOH2) and silicon oxide (SiO2). Important aggregation with CNTs, which may form more entangled bundles, ropes, than asbestos.


Chemistry

Different chemistry. Possibility of metal impurities in both asbestos and CNTs.


Surface reactivity

Both show sorptive properties to biological molecules. ROS production: no definitive answer for CNTs.


Jaurand et al. Particle and Fibre Toxicology 2009 6:16   doi:10.1186/1743-8977-6-16

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