Measurement of the specific surface of powder by the method of filtering rarefied gas
β Scribed by B.V. Derjaguin; D.V. Fedoseev; S.P. Vnukov
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 746 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0079-6816
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## Abstract The paper describes a modification of the Kozeny theory of the airβpermeability method for determining the specific surface of powders to take into account the effect of βslipβ at the walls of the pores in the bed of powder. The dependence of the measured value of specific surface on th
The behavior of pharmaceutical solids, during either processing or use, can be noticeably affected by the surface energetics of the constituent particles. Several techniques exist to measure the surface energy, for example, sessile drop, and dynamic contact angle measurements. Inverse gas chromatogr