Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

High-pressure phase behavior of tri-ethylene glycol dimethacrylate and tetra-ethylene glycol dimethacrylate in supercritical carbon dioxide

Cho, D. W.[Dong Woo], Shin, J.[Jungin], Bae, W.[Won], Kim, H.[Hwayong], Lee, J. H.[Ju Ho], Shin, M. S.[Moon Sam]
Fluid Phase Equilib. 2012, 319, 37-41
ABSTRACT
In this study, high-pressure phase behavior data, the pressure-composition (P-x) isotherms for the CO2 + T3EGDMA and CO2 + T4EGDMA binary mixture system, were measured using the static method with a variable-volume view cell at temperatures ranging from 313.2 to 363.2 K. The experimental data correlation was performed using the Peng-Robinson Equation of State (PR-EOS) and the van der Waals one-fluid mixing rule. The critical constants for the PR-EOS were estimated using the several group contributions. The acentric factor was estimated using the Lee-Kesler method. The Joback method shows the better correlation results than the others.
Compounds
# Formula Name
1 C16H26O7 ((oxybis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) bis(2-methylacrylate)
2 CO2 carbon dioxide
3 C14H22O6 ethane-1,2-diylbis(oxyethane-2,1-diyl) bis(2-methylacrylate)
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 3
  • 2
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 3
  • Visual observation of a second phase
  • 65
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Visual observation of a second phase
  • 56