Phase behavior of tetrahydrofurfuryl methacrylate and poly(tetrahydrofurfuryl methacrylate) in supercritical carbon dioxide. (May 2018)

• Record Type: Journal Article
• Authors: Cho, Sang-Ha; Lee, Bong-Seop; Byun, Hun-Soo
• Is Part Of: Journal of CO₂ utilization. Volume 25(2018)
• Page Start: 39
• Page End: 45
• Publication Date: 2018-05
• Subjects: Supercritical fluid -- Poly(tetrahydrofurfuryl methacrylate) -- Tetrahydrofurfuryl methacrylate -- Carbon dioxide -- Cloud-point pressure; Carbon dioxide -- Periodicals; Carbon dioxide -- Environmental aspects -- Periodicals; Carbon dioxide mitigation -- Periodicals; Carbon dioxide; Carbon dioxide -- Environmental aspects; Carbon dioxide mitigation; Periodicals; 628.53205
• DOI: 10.1016/j.jcou.2018.03.010
• Languages: English
• ISSNs: 2212-9820

Abstract

Graphical abstract: Highlights: The solubility data for the CO2 /tetrahydrofurfuryl methacrylate system are presented at temperature of (313.2–393.2) K and up to 22.07 MPa. The cloud-point measurements for poly(tetrahydrofurfuryl methacrylate)/CO2 /cosolvent systems are carried out up to 490.5 K and 289.83 MPa. The phase behaviors for poly(tetrahydrofurfuryl methacrylate) in supercritical CO2 shifted from UCST-type to LCST-type as increasing the concentration of cosovent. PC-SAFT equation of state described well the phase behaviors for binary and ternary systems. The UCST-type phase behavior is mainly due to governing rather the interaction between same species than that between different species. Abstract: High pressures phase behavior data for the CO2 /tetrahydrofurfuryl methacrylate (THFMA) systems are presented at (313.2–393.2) K and up to 22.07 MPa. The system exhibits the Type-I phase behavior with a continuous mixture-critical curve. The solubilities of poly(tetrahydrofurfuryl methacrylate) [P(THFMA)] + THFMA or dimethyl ether (DME) in supercritical carbon dioxide (CO2 ) were measured up to 490.5 K and 289.83 MPa. The cloud-point pressure for the P(THFMA) + CO2 system shifts to lower pressures as adding THFMA and DME as a cosolvent. P(THFMA) in pure CO2 did not dissolve up to the temperature of 498 K and pressure of 300.0 MPa. All experimental results with vapor-liquid equilibrium (VLE) for the CO2 /THFMA binary system and the cloud-point phase behaviors for the P(THFMA)/CO2 /cosolvent ternary systems were adequately modeled by the PC-SAFT equation of state. Calculation of the results with the PC-SAFT model showed that the UCST-type phase behavior is mainly due to governed by the interaction between the same species (i.e., between THFMA and THFMA, and between CO2 and CO2 ), rather than that between different species (i.e., between THFMA and CO2 ).