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Visualization of Spray and Particle Characteristics of SAS Precipitation of PMMA, PVP and Copolymers

Date:  March 3, 2009
Time:  2:00 p.m.
Place:  104 Textile Building

Steve R. Duke
Associate Professor
Department of Chemical Engineering
Auburn University Samuel Ginn College of Engineering

Abstract

Visualization of Spray and Particle Characteristics of SAS Precipitation of PMMA, PVP and Copolymers
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.