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Received August 18, 2008
Accepted October 28, 2008
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Cloud point behavior for poly(isodecyl methacrylate)+supercritical solvents+cosolvent and vapor-liquid behavior for CO2+isodecyl methacrylate systems at high pressure
Department of Chemical System Engineering, Chonnam National University, Yeosu, Jeonnam 550-749, Korea 1Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 100-611, Korea
Korean Journal of Chemical Engineering, January 2009, 26(1), 199-205(7), 10.1007/s11814-009-0033-x
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Abstract
Experimental cloud-point data of binary and ternary mixtures for poly(isodecyl methacrylate) [P(IDMA)] in supercritical carbon dioxide, dimethyl ether (DME), propane, propylene, butane and 1-butene have been studied experimentally using a high pressure variable volume view cell. These systems show the phase behavior at temperature of 308 K to 473 K and pressure up to 255MPa. The cloud-point curves for the P(IDMA)+CO2+isodecyl methacrylate (IDMA) are measured in changes of the pressure-temperature (P-T) slope, and with cosolvent concentrations of 0-60.1 wt%. Also, experimental data of phase behaviors for IDMA in supercritical carbon dioxide is obtained at temperature range of 313.2-393.2 K and pressure range of 5.8-22.03 MPa. The experimental results were modeled with the Peng-Robinson equation of state. The location of the P(IDMA)+CO2 cloud-point curve shifts to lower temperatures and pressures when DME is added to P(IDMA)+CO2 solution. The P(IDMA)+C4 hydrocarbons cloud-point curves are ca. 16.0 MPa lower pressures than the P(IDMA)+C3 hydrocarbons curves at constant temperature.
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References
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Rohm and Haas Company, Methacrylic/Acrylic Monomers, Form 18297 Rev. II, Philadelphia, PA (2002)
