Static and Dynamic Stickiness Tests to Measure Particle Stickiness

Sticking of particles has a tremendous impact on powder-processing industries, especially for hygroscopic amorphous powders. A wide variety experimental methods been developed to measure at what combinations temperature and moisture content material becomes sticky. This review describes, each method, how so-called stickiness curves are determined. As particle velocity also plays key role, we classify the into static dynamic tests. Static tests have limited motion during conditioning step prior measurement. Thus, obtained information is particularly useful in predicting long-term behavior powder storage or packaging. Dynamic involve significant Stickiness strongly depend velocity, highly relevant design operation production processing equipment. Virtually all determine onset using as starting point. Given many industrial processes like spray drying that start from liquid may become sticky upon drying, future effort should focus developing test droplet