Determining Friability of Plant Materials

Khishova, O. M.
December 2003
Pharmaceutical Chemistry Journal;Dec2003, Vol. 37 Issue 12, p637
Academic Journal
This article focuses on a study which was aimed at determining the influence of the histological structure, dimensions and shape of particles on the friability of comminuted plant materials. With respect to shape, such particles can be divided into three main types: elongated particles, platelike particles and equiaxial particles. The friability was determined using a 60° cone-shaped funnel with an output hole diameter of 10 mm and a short channel cut at right angle 3 mm below the cone apex. Results show that dominating fractions exhibit a determining influence on the technological properties of powdered materials. Therefore, these fractions have to be most thoroughly characterized with respect to linear dimensions and shapes.


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