1. An Apparatus for Evaluating the Dispersibility of Fine Powders.
- Author
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CHEMICAL RESEARCH AND DEVELOPMENT LABS EDGEWOOD ARSENAL MD, Pistritto, J. V., Cogswell, R. V., Pieroni, J. K., Sneiderman, H. S., CHEMICAL RESEARCH AND DEVELOPMENT LABS EDGEWOOD ARSENAL MD, Pistritto, J. V., Cogswell, R. V., Pieroni, J. K., and Sneiderman, H. S.
- Abstract
An apparatus was constructed for evaluating the dispersibility of fine powders. It consisted of a 27-cu ft chamber into which 0.2-gm portions of powder are aerosolized with a specially designed powder-dispersing gun. The decay of the resulting aerosol cloud was assayed by light-scattering measurements at 90 deg. Saccharin and polystyrene were used to evaluate the apparatus. Saccharin was selected because it is a crystalline, organic, nonhygroscopic material, and polystyrene was chosen because of its spherical shape and uniform particle size. The addition of Cab-o-sil (5% by weight) to saccharin improved dispersibility under all experimental conditions. (Author)
- Published
- 1964