engleski

Monodisperse sols of barium sulfate .3. electron-microscopic study of internal structure of particles

The internal structure of monodisperse barium sulfate particles precipitated from homogeneous solution was studied. The elliptically shaped particles were examined by a sufficiently penetrating electron beam (acceleration voltage 80 kV) and by the ultramicrotomic technique. The particles did not appear compact but had a sponge-like structure with an average pore size of 30 Å. The present results are supporting the assumption of barium sulfate particles being possibly formed by an aggregation mechanism predominantly over the direct diffusion growth of primary particles.

Monodisperse sols ; Barium sulfate particles ; Electron Microscopy

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