Powder handling is a common operation found in several industrial processes like storage, feeding, fluidization, blending, compaction etc. where powders are used as raw materials, intermediates, or final products. Oftentimes, handling and working with powders can be quite difficult and challenging owing to their change in behavior during manufacturing processes. This is especially true when process conditions change such as, for example, when a powder is fluidized during pneumatic conveying and consolidated during storage. Unexpected changes and poorly characterized properties of powders can have an enormous impact on the quality of the final product.
A number of technologies exist for powder characterization that encompasses powder sampling and analysis in a dry or wet state. Measured parameters typically include size, shape, surface area, porosity, and functionality. A good understanding of these powder parameters, along with the flowability of the powders, paves the way towards optimizing process conditions to achieve a quality final product.
We present, in this webinar, technologies and examples of powder characterization, including powder size, surface area, porosity, and powder flow. As surface area is the means by which a solid interacts with its environment, the area of the solid surface affects how it interacts and flows. Many powder properties, such as dissolution rates of pharmaceuticals, catalytic activity adsorption capacity, moisture retention, and shelf life are often correlated to the surface area which, in turn, is affected by its size and porosity. Controlling these powder properties, along with knowledge of powder flow behavior is critical to have an efficient powder manufacturing process.
This webinar will also focus on employing a rheometer to study powders in a fluidized and compacted state to analyze powder flowability. Case studies with different types powders ranging from free flowing to cohesive will also be discussed.
- Discover state of the art technologies for powder characterization
- Learn about influencing factors of powder behavior
- Understand the methods needed for analyzing powder surface area, pore size and pore size distribution
- Discover the importance of measuring rheological properties during the formulation stage
- Learn about how to tie together results obtained from different techniques
Dr. Vinod Radhakrishnan is a Senior Product Specialist with the Advanced Technical Center at Anton Paar USA. Dr. Radhakrishnan’s areas of expertise includes surface charge and zeta potential, particle sizing using light scattering and laser diffraction, and surface area and porosity. Dr. Radhakrishnan holds a Ph.D. in Chemical Engineering from Auburn University.
Dr. Abhishek Shetty is a Lead Scientist working at the Advanced Technical center at Anton Paar USA. Dr. Shetty received his BS degree in Chemical Engineering from National Institute of Technology Karnataka and MS and PhD from University of Michigan, Ann Arbor, USA. Dr. Shetty has over 15 years of working experience in academia, CPG and Advanced instrumentation space. He is a named inventor on 2 US patents, has published several peer-reviewed scientific journal articles which have garnered hundreds of citations and also has presented at several scientific technical conferences. As the Lead Scientist at Anton Paar, his responsibilities are to develop next generation materials characterization methods relevant to Anton Paar’s rheology portfolio. Dr. Shetty's work with teams spans across the globe to develop new advanced applications using advanced rheometric tools. His work has been featured in prestigious journals such as Proceedings of the National Academy of Sciences (PNAS), Science Advances, Physical Review Letters (PRL), Journal of Rheology (JOR) etc.