Measurement of activities of solvents in binary polymer solutions |
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| Affiliation: | 1. Department of Chemical Engineering, Ben Gurion University of the Negev, Beer Sheva, Israel;2. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia |
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| Abstract: | Vapor liquid equilibrium data of nine binary solvent+polymer systems were measured by a vacuum electro-microbalance cell. Tested solvents were n-heptane, n-octane, n-nonane, methanol, ethanol, n-propanol and water. Polymers were poly (dimethylsiloxane, Mn: 26,000), poly (propylene oxide, Mn: 2000) and poly (ethylene glycol, Mn: 600). Data obtained in the present study together with existing literature data were correlated by UNIQUAC model. Reliability of the experimental apparatus and the data was discussed. |
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