Solubilities of sub- and supercritical carbon dioxide in polyester resins.: An article from: Polymer Engineering and Science

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From the author: In supercritical carbon dioxide (C[O.sub.2]) assisted polymer processes the solubility of C[O.sub.2] in a polymer plays a vital role. The higher the amount of C[O.sub.2] dissolved in a polymer the higher is the viscosity reduction of the polymer. Solubilities of C[O.sub.2] in polyester resins based on propoxylated bisphenol (PPB) and ethoxylated bisphenol (PEB) have been measured using a magnetic suspension balance at temperatures ranging from 333 to 420 K and pressures up to 30 MPa. An optical cell has been used to independently determine the swelling of the polymers, which has been incorporated in the buoyancy correction. In both polyester resins, the solubility of C[O.sub.2] increases with increasing pressure and decreasing temperature as a result of variations in C[O.sub.2] density. The experimental solubility has been correlated to the Sanchez-Lacombe equation of state. POLYM. ENG. SCI., 46:643-649, 2006. [c] 2006 Society of Plastics Engineers

Citation Details
Title: Solubilities of sub- and supercritical carbon dioxide in polyester resins.
Author: Sameer P. Nalawade
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: May 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 5 Page: 643(7)

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