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Home > Nanotechnology Columns > Bergeson & Campbell, P.C. > ISO Publishes Standard on Characterization of CNT Samples Using Thermogravimetric Analysis

Lynn L. Bergeson
Managing Director
Bergeson & Campbell, P.C.

Abstract:
The International Organization for Standardization (ISO) has published standard ISO/TS 11308:2020, "Nanotechnologies -- Characterization of carbon nanotube samples using thermogravimetric analysis."

April 16th, 2020

ISO Publishes Standard on Characterization of CNT Samples Using Thermogravimetric Analysis

The International Organization for Standardization (ISO) has published standard ISO/TS 11308:2020, "Nanotechnologies -- Characterization of carbon nanotube samples using thermogravimetric analysis." See https://www.iso.org/standard/69548.html?browse=tc The standard provides guidelines for the characterization of carbon nanotube (CNT)-containing samples by thermogravimetric analysis (TGA), performed in either an inert or oxidizing environment. The standard offers guidance on the purity assessment of the CNT samples through a quantitative measure of the types of carbon species present, as well as the non-carbon impurities (e.g., metal catalyst particles) within the material. ISO notes that this technique provides a qualitative assessment of the thermal stability and homogeneity of the CNT-containing sample. ISO states that additional characterization techniques are required to confirm the presence of specific types of CNT and to verify the composition of the metallic impurities present.

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