Table 4 |
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Comparison between physical and chemical parameters of asbestos and CNTs |
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Parameter |
Comparison |
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Shape |
Both are elongated particles; fibre shaped. |
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Dimensions |
Asbestos fibre diameter: range of 100 nm. Chrysotile fibrils: ≅ 50 nm of diameter. Same order as MWCNTs. |
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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. |
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Chemistry |
Different chemistry. Possibility of metal impurities in both asbestos and CNTs. |
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Surface reactivity |
Both show sorptive properties to biological molecules. ROS production: no definitive answer for CNTs. |
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Jaurand et al. Particle and Fibre Toxicology 2009 6:16 doi:10.1186/1743-8977-6-16 |
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