Continuous dry dispersion of multi-walled carbon nanotubes to aerosols with high concentrations of individual fibers.

ABSTRACT: The assessment of the toxicity of airborne nanofibers is an important task. It relies on toxicological inhalation studies and validated exposure measurement techniques. Both require nanofiber-containing aerosols of known morphological composition and controlled fraction of individual fibers. Here, a dry powder dispersion method is presented that operates with mixtures of nanofibers and microscale beads. Aerosolization experiments of mixtures of multi-walled carbon nanotubes (MWCNTs) and glass beads that were continuously fed into a Venturi nozzle enabled high generation rates of aerosols composed of individual and agglomerate nanofiber structures. The aerosol process achieved good stability over more than 2 h with respect to concentration and aerodynamic size distribution. Its operation du

SUBMITTER: Simonow BK 

PROVIDER: S-EPMC5984959 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature