On the effect of polymer fractionation on phase equilibrium in CO2 + poly(ethylene glycol)s systems

J. A. Lopes; D. Gourgouillon; P. J. Pereira; A. M. Ramos; M. Nunes Da Ponte

doi:10.1016/S0896-8446(99)00033-9

On the effect of polymer fractionation on phase equilibrium in CO₂ + poly(ethylene glycol)s systems

J. A. Lopes^*
, D. Gourgouillon
, P. J. Pereira
, A. M. Ramos
, M. Nunes Da Ponte

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Phase equilibrium ratios of poly(ethylene glycol)s (PEG) of average molar masses 200, 400 and 600 with supercritical CO₂, were measured at 20 MPa and 313 K. Additional measurements with the monomer, ethylene glycol and with PEG 400 at 293 K were also performed. Three different methods of analysing the PEG amounts in each phase were used. Using a size exclusion chromatography procedure (SEC/GPC) we have observed a relevant fractionation of the polymer in the case of the system CO₂ + PEG 600. Some of the results obtained differ significantly from previously published values on the same systems. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	261-267
Number of pages	7
Journal	Journal of Supercritical Fluids
Volume	16
Issue number	3
DOIs	https://doi.org/10.1016/S0896-8446(99)00033-9
Publication status	Published - 15 Jan 2000
Externally published	Yes

Keywords

Ethylene glycol
Phase equilibrium
Poly(ethylene glycol)
Polymer fractionation
Supercritical carbon dioxide

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10.1016/S0896-8446(99)00033-9

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title = "On the effect of polymer fractionation on phase equilibrium in CO2 + poly(ethylene glycol)s systems",

abstract = "Phase equilibrium ratios of poly(ethylene glycol)s (PEG) of average molar masses 200, 400 and 600 with supercritical CO2, were measured at 20 MPa and 313 K. Additional measurements with the monomer, ethylene glycol and with PEG 400 at 293 K were also performed. Three different methods of analysing the PEG amounts in each phase were used. Using a size exclusion chromatography procedure (SEC/GPC) we have observed a relevant fractionation of the polymer in the case of the system CO2 + PEG 600. Some of the results obtained differ significantly from previously published values on the same systems. (C) 2000 Elsevier Science B.V.",

keywords = "Ethylene glycol, Phase equilibrium, Poly(ethylene glycol), Polymer fractionation, Supercritical carbon dioxide",

author = "Lopes, \{J. A.\} and D. Gourgouillon and Pereira, \{P. J.\} and Ramos, \{A. M.\} and \{Nunes Da Ponte\}, M.",

year = "2000",

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doi = "10.1016/S0896-8446(99)00033-9",

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TY - JOUR

T1 - On the effect of polymer fractionation on phase equilibrium in CO2 + poly(ethylene glycol)s systems

AU - Lopes, J. A.

AU - Gourgouillon, D.

AU - Pereira, P. J.

AU - Ramos, A. M.

AU - Nunes Da Ponte, M.

PY - 2000/1/15

Y1 - 2000/1/15

N2 - Phase equilibrium ratios of poly(ethylene glycol)s (PEG) of average molar masses 200, 400 and 600 with supercritical CO2, were measured at 20 MPa and 313 K. Additional measurements with the monomer, ethylene glycol and with PEG 400 at 293 K were also performed. Three different methods of analysing the PEG amounts in each phase were used. Using a size exclusion chromatography procedure (SEC/GPC) we have observed a relevant fractionation of the polymer in the case of the system CO2 + PEG 600. Some of the results obtained differ significantly from previously published values on the same systems. (C) 2000 Elsevier Science B.V.

AB - Phase equilibrium ratios of poly(ethylene glycol)s (PEG) of average molar masses 200, 400 and 600 with supercritical CO2, were measured at 20 MPa and 313 K. Additional measurements with the monomer, ethylene glycol and with PEG 400 at 293 K were also performed. Three different methods of analysing the PEG amounts in each phase were used. Using a size exclusion chromatography procedure (SEC/GPC) we have observed a relevant fractionation of the polymer in the case of the system CO2 + PEG 600. Some of the results obtained differ significantly from previously published values on the same systems. (C) 2000 Elsevier Science B.V.

KW - Ethylene glycol

KW - Phase equilibrium

KW - Poly(ethylene glycol)

KW - Polymer fractionation

KW - Supercritical carbon dioxide

UR - https://www.scopus.com/pages/publications/0034650092

U2 - 10.1016/S0896-8446(99)00033-9

DO - 10.1016/S0896-8446(99)00033-9

M3 - Article

AN - SCOPUS:0034650092

SN - 0896-8446

VL - 16

SP - 261

EP - 267

JO - Journal of Supercritical Fluids

JF - Journal of Supercritical Fluids

IS - 3

ER -

On the effect of polymer fractionation on phase equilibrium in CO₂ + poly(ethylene glycol)s systems

Abstract

Keywords

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