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Received January 26, 2017
Accepted March 26, 2017
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Phase behavior of binary and ternary mixture for the poly(TBAEMA) and TBAEMA in supercritical solvents
Department of Fire and Disaster Prevention Engineering, Kyungnam University, Changwon, Gyeongnam 51767, Korea 1Department of Chemical and Biomolecular Engineering, Chonnam National University, Yeosu, Jeonnam 59626, Korea
Korean Journal of Chemical Engineering, July 2017, 34(7), 2056-2064(9), 10.1007/s11814-017-0091-4
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Abstract
The cloud-point pressure of poly(t-butylaminoethyl methacrylate) [Poly(TBAEMA)] in various solvents such as supercritical carbon dioxide (CO2), dimethyl ether (DME) and t-butylaminoethyl methacrylate (TBAEMA) was measured to maximum pressure and temperature of 218.79MPa and 452.9 K, respectively. The phase behavior for the Poly(TBAEMA)+CO2+TBAEMA mixture was investigated according to the various contribution factors, such as pressure, temperature and concentration with TBAEMA mass fraction of 9.9 wt%, 10.4 wt%, 14.9 wt%, 24.4 wt% and 35.2 wt%. The cloud point curves for the Poly(TBAEMA)+CO2+DME (15.6-78.7 wt%) systems show the variation of the (p, T) curve from upper critical solution temperature (UCST) region to lower critical solution temperature (LCST) region as DME concentration increases. The experimental data for the CO2+TBAEMA system were reported at the broad temperature range of 313.2 K to 393.2 K and the pressure range of 3.70MPa to 20.62MPa. The CO2+TBAEMA binary system shows the type-I phase behavior with a continuous critical mixture curve, and is correlated by Peng-Robinson equation of state with the critical properties for TBAEMA obtained by Joback and Lyderson group contribution method.
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References
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Lora M, McHugh MA, Fluid Phase Equilib., 157(2), 285 (1999)
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Poling BE, Prausnitz JM, O’Connell JP, The Properties of Gases and Liquid, 5th Ed., McGraw-Hill, New York (2001).
Albrecht KL, Stein FP, Han SJ, Gregg CJ, Radosz M, Fluid Phase Equilib., 117(1-2), 84 (1996)
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Byun HS, Korean Chem. Eng. Res., 54(2), 206 (2016)
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Lee BC, Nam SG, Korean J. Chem. Eng., 32(3), 521 (2015)
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Yoon SD, Byun HS, J. Chem. Thermodyn., 71, 91 (2014)
Chirico RD, Frenkel M, Diky VV, Marsh KN, Wilhoit RC, J. Chem. Eng. Data, 48(5), 1344 (2003)
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