Application Studies

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Powder Relaxation, relaxation energy, powder stiffness

Powder Compaction & Relaxation - MCC

The flowability of powders is critical to preparation and use of many food, pharmaceutical and personal care products. SMS’ Powder Flow Analyzer (PFA) is an excellent tool for quantifying flow with volumes over 120 ml, and the PFA even works on some powders in volumes around 25 ml. Often, however, clients need to quantify the flowability of very small quantities of powder. This study of microcrystalline cellulose (Avicel®) illustrates an alternative method, which may be suitable for testing the relative flowability of extremely small samples of powder. The test premise is that powders that flow more easily are more mobile under pressure and will relax faster than powders that flow more poorly.