Density measurements of single granules using the atomic force microscope

• The density of single spray-dried granules has been determined with a new method based on the atomic force microscopy (AFM). Spherical granules with a well-defined diameter are attached to the AFM cantilever, which acts as a beam type spring, and the mass of a granule is estimated from the shift in the resonant frequency. The error of the measurements associated with the method was estimated to vary between 1-5% depending on the size and shape of the granule. Density measurements of spray-dried WC-Co granules are presented and the effect of a polymeric binder and dispersant on the consolidation during drying is discussed

Nyckelord

Granule

AFM

density

binder

polyethylene glycol

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)