Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Effect of Dissolved Poly(lactic acid) on the Solubility of CO2, N2, and He Gases in Dichloromethane

Molino Cornejo, J.[Jay], Sakurai, D.[Daichi], Daiguji, H.[Hirofumi], Takemura, F.[Fumio]
J. Chem. Eng. Data 2016, 61, 1, 94-101
ABSTRACT
The effect of dissolved poly(lactic acid) (PLA) on the solubility of gases (CO2, N2, and He) in dichloromethane (CH2Cl2) was investigated, between 288 and 303 K, by measuring the equilibrium pressure in a closed vessel containing a gas and CH2Cl2 solutions of different types (molecular weights) and concentrations of PLA. The results show that, in the absence of PLA, the order of the solubility of gases in dichloromethane was He less than N2 less than CO2. Furthermore, an increase in the concentration of PLA did not appreciably change the solubility of CO2 in the solutions but led to a higher solubility of N2 and He. The effect of PLA on the increase of gas solubility in CH2Cl2 was larger for less soluble gases. Semiempirical correlations of the dependence of the Henry s law constant of the gases on the temperature and PLA concentration were also derived from the measured data.
Compounds
# Formula Name
1 CH2Cl2 dichloromethane
2 He helium
3 CO2 carbon dioxide
4 N2 nitrogen
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
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 4
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Gas
  • Temperature, K; Gas
  • Mole fraction - 2; Liquid
  • Gas
  • Liquid
  • Closed cell (Static) method
  • 12
  • POMD
  • 1
  • 3
  • Vapor or sublimation pressure, kPa ; Gas
  • Temperature, K; Gas
  • Mole fraction - 3; Liquid
  • Gas
  • Liquid
  • Closed cell (Static) method
  • 4
  • POMD
  • 1
  • 4
  • Vapor or sublimation pressure, kPa ; Gas
  • Temperature, K; Gas
  • Mole fraction - 4; Liquid
  • Gas
  • Liquid
  • Closed cell (Static) method
  • 4