A new analytical technique based on vapor-phase infrared (IR) spectroscopy has been developed to measure vapor−liquid equilibria in binary and multicomponent polymer/solvent systems. A leak-tight glass vial and heater assembly have been designed to enable in situ IR measurements at conditions of experimental interest, and appropriate calibration curves have been measured. Data obtained by this technique are quantitatively compared with toluene/poly(vinyl acetate) and methanol/poly(vinyl acetate) binary data measured by standard gravimetric analysis.
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Zielinski et al. (2001) studied this question.
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