A VARIABLE-VOLUME OPTICAL PRESSURE-VOLUME-TEMPERATURE CELL FOR HIGH-PRESSURE CLOUD POINTS, DENSITIES, AND INFRARED-SPECTRA, APPLICABLE TO SUPERCRITICAL-FLUID SOLUTIONS OF POLYMERS UP TO 2 KBAR
Cj. Gregg et al., A VARIABLE-VOLUME OPTICAL PRESSURE-VOLUME-TEMPERATURE CELL FOR HIGH-PRESSURE CLOUD POINTS, DENSITIES, AND INFRARED-SPECTRA, APPLICABLE TO SUPERCRITICAL-FLUID SOLUTIONS OF POLYMERS UP TO 2 KBAR, Journal of chemical and engineering data, 39(2), 1994, pp. 219-224
A new high-pressure variable-volume optical cell equipped with a sapph
ire window, a movable piston with a position sensor, and infrared fibe
r optic probes is described. The apparatus was tested by measuring the
cloud points for the system propylene + poly(ethylenepropylene) at 10
0 and 150-degrees-C, the densities of ethylene and propylene up to 100
0 and 600 bar, respectively, and the midinfrared spectra of hexane at
500 bar.