Phase equilibria of saturated and unsaturated polyisoprene in sub- and supercritical ethane, ethylene, propane, propylene, and dimethyl ether

Albrecht, Kristi L.; Stein, Fred P.; Han, Suh Joon; Gregg, Christopher J.; Radosz, Maciej

doi:10.1016/0378-3812(95)02940-0

Cited by 47 publications

(30 citation statements)

References 11 publications

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“…The cloud-point phase behavior of binary and ternary systems of PHPA + supercritical solvents + cosolvent and PHPMA + supercritical solvents + cosolvent mixtures were measured, and the total uncertainty of the pressure and temperature is estimated at least to within ±0.31 MPa and ±0.3 K. Table 1 Critical temperatures, critical pressures, critical densities, polarizabilities, dipole moments, and quadrupole moments of the solvents used in this study [9,12,13].…”

Section: Resultsmentioning

confidence: 99%

“…Previous work has revealed that binary mixtures consisting of a polymer in an SCF solvent shifts to a lower pressure phase boundary upon addition of a cosolvent [9][10][11]. Albrecht et al [9] has reported cloud-point pressures for binary sub-and SCF solutions containing either saturated or unsaturated polyisoprene in ethane, ethylene, propane, propylene and dimethyl ether (DME), up to 423 K and 140.0 MPa.…”

Section: Introductionmentioning

confidence: 97%

“…Albrecht et al [9] has reported cloud-point pressures for binary sub-and SCF solutions containing either saturated or unsaturated polyisoprene in ethane, ethylene, propane, propylene and dimethyl ether (DME), up to 423 K and 140.0 MPa. McHugh et al [10] determined experimental cloud-point data for poly(butyl acrylate) and poly(2-ethylhexyl acrylate) + CO 2 + cosolvent mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…These data show the effect of solvent polarity on the location of the cloud-point curves in a pressure-temperature plot. Table 1 lists the critical temperature (T c ), critical pressure (p c ), acentric factor (ω), polarizability (˛), dipole moment ( ), and quadrupole moment (Q) of each solvent used in this study [9,12,13]. CO 2 has a significant quadrupole moment and no dipole moment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Cloud-point behavior of binary and ternary mixtures of PHPMA and PHPA in supercritical fluid solvents

Yang¹,

Jeong²,

Byun³

2012

Fluid Phase Equilibria

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cloud-point behavior of binary and ternary mixtures of PHPMA and PHPA in supercritical fluid solvents

Yang¹,

Jeong²,

Byun³

2012

Fluid Phase Equilibria

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“…Recently, SAFT EoS and modified versions are widely used for the calculation of polar systems [5,6] and polymer solutions [11,12]. Yarrison and Chapman [13] combined quantum mechanics calculation with CK-SAFT and reviewed calculation results for methanol + n-alkane systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of surface area parameters on the vapor–liquid equilibrium calculations using a lattice fluid equation of state with hydrogen bonding

Breitholtz

Lee

Yoo

et al. 2010

Journal of Industrial and Engineering Chemistry

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Influence of the alkyl tail on the solubility of poly(alkyl acrylates) in ethylene and CO2 at high pressures: Experiments and modeling

Lora

Rindfleisch

McHugh

1999

J. Appl. Polym. Sci.

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ABSTRACT:Cloud point data to 230°C and 2200 bar are presented for poly(acrylate)-ethylene mixtures. When the length of the alkyl tail is increased, the cloud point curve is shifted towards lower pressure, but this trend switches when going from poly(ethyl hexyl) to poly(octadecyl) acrylate. It is apparent that there is an optimum alkyl tail length that balances energetic acrylate-acrylate, ethylene-ethylene, and ethyleneacrylate interactions and free-volume, entropic effects. Both ethylene-poly(acrylate) and CO 2 -poly(acrylate) data are modeled by the Statistical Associating Fluid Theory (SAFT) equation of state. A pseudogroup contribution method is developed for the calculation of the following pure polymer characteristic parameters: m, the number of segments, and v 00 , the volume of a segment. This method cannot be applied for u 0 /k, the attractive energy of a segment, which changes in a nonlinear manner with changes in the structure of the acrylate repeat group. The energy parameter is then calculated from monomer data or fitted directly to one cloud point curve. The experimental data are represented well, even if little predictive power is obtained since a temperatureindependent interaction parameter k ij is needed.

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Phase equilibria of saturated and unsaturated polyisoprene in sub- and supercritical ethane, ethylene, propane, propylene, and dimethyl ether

Cited by 47 publications

References 11 publications

Cloud-point behavior of binary and ternary mixtures of PHPMA and PHPA in supercritical fluid solvents

Cloud-point behavior of binary and ternary mixtures of PHPMA and PHPA in supercritical fluid solvents

Effect of surface area parameters on the vapor–liquid equilibrium calculations using a lattice fluid equation of state with hydrogen bonding

Influence of the alkyl tail on the solubility of poly(alkyl acrylates) in ethylene and CO2 at high pressures: Experiments and modeling

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