Published: Feb 27, 2009 8:05:00 AM
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Steve Duke, associate professor in the Department of Chemical Engineering, will present "Visualization of Spray and Particle Characteristics of SAS Precipitation of PMMA, PVP and Copolymers" on Tuesday, March 3, at 2 p.m. in 104 Textile Building. His lecture is hosted by the Department of Polymer and Fiber Engineering.
Duke will discuss supercritical antisolvent (SAS) precipitation process experiments performed to directly relate spray properties to particle characteristics for several polymers and copolymers. A high-resolution imaging system was used to study the spray characteristics of polymer and ethanol solutions in pressurized carbon dioxide. Image processing and analyses were developed to measure jet breakup lengths, drop properties and particle characteristics. He will explore the visualizations that provided high magnification video of the jet emerging from the spray nozzle and of the spray at various distances from the nozzle tip.