Abstract:This paper presents a method for analyzing polyurethane fiber finishes based on supercritical fluid extraction (SFE) coupled directly to an infrared (IR) spectrometer by means of a simple, universal IR flow cell. In this method, supercritical CO 2 is used to replace environmentally hazardous perchlorinated solvents. An automated sampleloading SFE extractor reduces analysis labor. Extract effluent from the extractor flows through a heated capillary transfer line and a high-pressure, standard-geometry IR flow ce… Show more
“…Liescheski used a flow-cell approach to IR and monitored the vinylic C-H band to measure the iodine number in edible oils (267). Liescheski et al used the same approach to characterize polyurethane fiber finishes (268).…”
“…Liescheski used a flow-cell approach to IR and monitored the vinylic C-H band to measure the iodine number in edible oils (267). Liescheski et al used the same approach to characterize polyurethane fiber finishes (268).…”
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