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Phase behavior for the poly(alkyl methacrylate)+supercritical CO2+DME mixture at high pressures

  • Separation Technology, Thermodynamics
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Abstract

The phase behavior curves of binary and ternary system were measured for poly(alkyl methacrylate) in supercritical CO2, as well as for the poly(alkyl methacrylate)+dimethyl ether (DME) (or 1-butene) in CO2. The solubility curves are reported for the poly(alkyl methacrylate)+DME in supercritical CO2 at temperature from (300 to 465) K and a pressure from (3.66 to 248) MPa. Also, The high-pressure static-type apparatus of cloud-point curve was tested by comparing the measured phase behavior data of the poly(methyl methacrylate) [PMMA]+CO2+20.0 and 30.4 wt% methyl methacrylate (MMA) system with literature data of 10.4, 28.8 and 48.4 wt% MMA concentration. The phase behavior data for the poly(alkyl methacrylate)+CO2+DME mixture were measured in changes of the pressure-temperature (p, T) slope and with DME concentrations. Also, the cloud-point pressure for the poly(alkyl methacrylate)+1- butene solution containing supercritical CO2 shows from upper critical solution temperature (UCST) region to lower critical solution temperature (LCST) region at concentration range from (0.0 to 95) wt% 1-butene at below 455 K and at below 245MPa.

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Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering, Chonnam National University, Yeosu, Jeonnam, 59626, Korea

    Yong-Seok Choi, Sang-Won Chio & Hun-Soo Byun

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  1. Yong-Seok Choi
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  2. Sang-Won Chio
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  3. Hun-Soo Byun
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Correspondence to Hun-Soo Byun.

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Choi, YS., Chio, SW. & Byun, HS. Phase behavior for the poly(alkyl methacrylate)+supercritical CO2+DME mixture at high pressures. Korean J. Chem. Eng. 33, 277–284 (2016). https://doi.org/10.1007/s11814-015-0208-6

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  • DOI: https://doi.org/10.1007/s11814-015-0208-6

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