Predictions of the solubility of gases in glassy polymers based on the NELF model

Sarti, Giulio Cesare; Doghieri, Ferruccio

doi:10.1016/s0009-2509(98)00143-2

Cited by 125 publications

(170 citation statements)

References 22 publications

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“…This composition variable is the suitable one in the frame of the lattice theory and can be readily related to the weight fraction, ω i , as follows: 38 where F i / is obtained as…”

Section: Thermodynamic With Order Parametersmentioning

confidence: 99%

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂

Bonavoglia

Storti

Morbidelli

2005

Ind. Eng. Chem. Res.

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The effect of semicrystallinity on the sorption and swelling behavior of polymers in supercritical CO 2 is investigated. In particular, the experimental behavior measured for four different polymers in a previous work, i.e., poly(methyl methacrylate), poly(vinylidene fluoride), poly(tetrafluoroethylene), and the copolymer tetrafluoroethylene-perfluoromethylvinyl ether, is modeled using four different thermodynamic approaches: the Sanchez-Lacombe method in its nonequilibrium and equilibrium version, a modification of the latter for cross-linked polymers, and the statistical association fluid theory (SAFT) approach. The four considered polymers have an increasing crystallinity from 0% (poly(methyl methacrylate)) to about 50% (poly(vinylidene fluoride)). The results in terms of sorption and swelling are compared and the parameter evaluation procedure is discussed. It is observed that the nonequilibrium Sanchez-Lacombe method performs better than the others in describing the semicrystalline polymers at least from a qualitative point of view. This supports the interpretation that semicrystallinity induces a nonequilibrium effect, since the polymer structure, made more rigid from the presence of the crystallites, does not recover the original compactness after sorption of CO 2 .

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“…This composition variable is the suitable one in the frame of the lattice theory and can be readily related to the weight fraction, ω i , as follows: 38 where F i / is obtained as…”

Section: Thermodynamic With Order Parametersmentioning

confidence: 99%

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂

Bonavoglia

Storti

Morbidelli

2005

Ind. Eng. Chem. Res.

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show abstract

“…[25][26][27] For light gases, such as N 2 , O 2 , CO 2 , and CH 4 , the SL parameters were determined by fitting the model to experimental gas densities as a function of temperature at various pressures. The experimental data were taken from the work of Vargaftik.…”

Section: Evaluation Of Penetrant Parametersmentioning

confidence: 99%

Hydrocarbon and fluorocarbon solubility and dilation in poly(dimethylsiloxane): Comparison of experimental data with predictions of the Sanchez-Lacombe equation of state

Angelis

Merkel

Bondar

et al. 1999

J. Polym. Sci. B Polym. Phys.

100

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“…The currently used models are the 'dual-mode' model (Vieth et al, 1976), the cubic equation of state (EOS) as Peng-Robinson (Zhong & Masuoka, 1998) or Soave-Redlich-Kwong (Orbey et al, 1998) EOSs, the lattice-fluid model of Sanchez-Lacombe equation of state (SL-EOS) with the extended equation of Doghieri-Sarti (Doghieri & Sarti, 1996;Sarti & Doghieri, 1998), and the Statistical Associating Fluid Theory (SAFT) (Prigogine et al, 1957;Beret & Prausnitz, 1975;Behme et al, 1999). From the state of the art, the thermodynamic SL-EOS was preferably selected to theoretically estimate the change in volume of the polymer versus pressures and temperatures found in eq.…”

Section: Solubility and Concomitant Swelling Of Solvent-saturated Molmentioning

confidence: 99%

Thermodynamics and Thermokinetics to Model Phase Transitions of Polymers over Extended Temperature and Pressure Ranges Under Various Hydrostatic Fluids

Boyer¹,

Grolier²,

Yoshida³

et al. 2011

Thermodynamics - Interaction Studies - Solids, Liquids and Gases

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Predictions of the solubility of gases in glassy polymers based on the NELF model

Cited by 125 publications

References 22 publications

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂

Hydrocarbon and fluorocarbon solubility and dilation in poly(dimethylsiloxane): Comparison of experimental data with predictions of the Sanchez-Lacombe equation of state

Thermodynamics and Thermokinetics to Model Phase Transitions of Polymers over Extended Temperature and Pressure Ranges Under Various Hydrostatic Fluids

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Predictions of the solubility of gases in glassy polymers based on the NELF model

Cited by 125 publications

References 22 publications

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO2

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO2

Hydrocarbon and fluorocarbon solubility and dilation in poly(dimethylsiloxane): Comparison of experimental data with predictions of the Sanchez-Lacombe equation of state

Thermodynamics and Thermokinetics to Model Phase Transitions of Polymers over Extended Temperature and Pressure Ranges Under Various Hydrostatic Fluids

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Product

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About

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂

Modeling of the Sorption and Swelling Behavior of Semicrystalline Polymers in Supercritical CO₂