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Received June 15, 2011
Accepted July 27, 2011
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High pressure phase behavior for the binary mixture of pentafluoropropyl methacrylate and poly(pentafluoropropyl methacrylate) in supercritical carbon dioxide and dimethyl ether
School of Biotechnology and Chemical Engineering, Chonnam National University, Yeosu, Jeonnam 550-749, Korea 1Department of Ophthalmic Optics, Daegu Technical University, Daegu 704-721, Korea
Korean Journal of Chemical Engineering, March 2012, 29(3), 413-419(7), 10.1007/s11814-011-0188-0
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Abstract
Pressure-composition isotherm is obtained for the carbon dioxide+2,2,3,3,3-pentafluoropropyl methacrylate (PFPMA) using static apparatus with a variable volume view cell at temperature range from 40 ℃ to 120 ℃ and pressure up to 130 bar. This system exhibits type-I phase behavior with a continuous mixture-critical curve. The experimental result for carbon dioxide+PFPMA mixture was modeled using the Peng-Robinson (P-R) and multi-fluid nonrandom_x000D_
lattice fluid (MF-NLF) equation of state. Experimental cloud-point data of pressure up 470 bar and temperature to 182 ℃ were reported for the binary mixture of poly(2,2,3,3,3-pentafluoropropyl methacrylate) [Poly(PFPMA)] in supercritical carbon dioxide and dimethyl ether (DME). The Poly(PFPMA)+carbon dioxide and Poly(PFPMA)+DME systems showed LCST behavior.
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References
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Liu S, Lee HY, Yoon SD, Yoo KP, Byun HS, Ind. Eng. Chem. Res., 48(16), 7821 (2009)
Bae W, Shin H, Kim H, Phys. Chem. Chem. Phys., 6, 2295 (2004)
Mertdogan CA, Byun HS, McHugh MA, Tuminello WH, Macromolecules, 29(20), 6548 (1996)
Byun HS, Yoo YH, Korean J. Chem. Eng., 21(6), 1193 (2004)
Shin J, Lee YW, Kim H, Bae W, J. Chem. Eng. Data., 51, 1571 (2006)
Peng DY, Robinson DB, Ind. Eng. Chem. Res. Fundam., 15, 59 (1976)
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Albrecht KL, Stein FP, Han SJ, Gregg CJ, Radosz M, Fluid Phase Equilib., 117(1-2), 84 (1996)
