Solubilities of carbon dioxide and nitrogen in polystyrene under high temperature and pressure

Satō, Yoshiyuki; Yurugi, Masashi; Fujiwara, Koji; Takishima, Shigeki; Masuoka, Hirokatsu

doi:10.1016/s0378-3812(96)03094-4

Cited by 258 publications

(239 citation statements)

References 13 publications

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“…These χ parameters correspond to a blowing agent of a "nitrogen" type, since we get higher solubilities at higher temperatures [14]. Other choices of χ parameters can give lower solubilities at higher temperatures which would correspond to "carbon dioxide" type blowing agents [15,16,17,18,19]. Figure 2 shows cell densities as a function of sample volume for the above choices of parameters corresponding to T = 1.5 and T = 2.0.…”

Section: Resultsmentioning

confidence: 99%

Maximal cell density predictions for compressible polymer foams

Kim

Park

Chen

et al. 2013

Polymer

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Thermodynamic upper bounds for polymer foam cell densities are predicted us ing compressible self-consistent field theory. It is found that the incompressible limit always gives the highest, and therefore ultimate, upper bound. Qualitative comparisons between the compressible and incompressible cases agree, indicat ing that low temperatures and high blowing agent content should be used to achieve high cell densities. The inhomogeneous bubble structure reveals devia tions from the expected homogeneous Sanchez-Lacombe equation of state, con sistent with some experimental results. A generalized Sanchez-Lacombe equa tion of state is discussed in the context of its suitability as a simple alternative to the Simha-Somcynsky equation of state.

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Section: Resultsmentioning

confidence: 99%

Maximal cell density predictions for compressible polymer foams

Kim

Park

Chen

et al. 2013

Polymer

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“…Like surface tension, solubility is another determining factor in microcellular foam processing and polymer blending [19,30,31]. Knowing solubility, as well as surface tension in the processing range of temperature and pressure, one can decide on the processing window of the desired polymer.…”

Section: Solubility Measurementsmentioning

confidence: 99%

Effect of pressure and temperature on interfacial tension of poly lactic acid melt in supercritical carbon dioxide

et al. 2015

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“…The critical line II 2 The solid circles are the experimental data. 11,12 emerges from the critical point of the pure PMMA and moves up in pressure with decreasing temperature. In the region near the critical point of pure PMMA, the polymer-rich liquid coexists with the CO 2 -rich vapor at the binodal of the mixture.…”

Section: Resultsmentioning

confidence: 99%

“…These parameters are obtained by fitting the solubility value of EOS with the experimental data at different temperatures. 11,12 The temperature range for the validity of these parameters is also listed in Table I.…”

Section: A Molecular Modelmentioning

confidence: 99%

“…In this work, the three parameters for CO 2 are obtained by fitting the PVT data of pure CO 2 . 15 The parameters for PS and PMMA are then regressed by fitting the solubility data 11,12 of CO 2 in the mixtures at three different temperatures (T = 373.2 K, 413.2 K, and 453.2 K for PS; T = 323.2 K, 338.2K, and 353.2K for PMMA). The value of the energy parameter is temperature dependent.…”

Section: B Perturbed-chain Saft Eosmentioning

confidence: 99%

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Density-functional theory for polymer-carbon dioxide mixtures: A perturbed-chain SAFT approach

Cristancho

Costeux

et al. 2012

The Journal of Chemical Physics

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We propose a density-functional theory (DFT) describing inhomogeneous polymer-carbon dioxide mixtures based on a perturbed-chain statistical associating fluid theory equation of state (PC-SAFT EOS). The weight density functions from fundamental measure theory are used to extend the bulk excess Helmholtz free energy to the inhomogeneous case. The additional long-range dispersion contributions are included using a mean-field approach. We apply our DFT to the interfacial properties of polystyrene-CO 2 and poly(methyl methacrylate) CO 2 systems. Calculated values for both solubility and interfacial tension are in good agreement with experimental data. In comparison with our earlier DFT based on the Peng-Robinson-SAFT EOS, the current DFT produces quantitatively superior agreement with experimental data and is free of the unphysical behavior at high pressures (>35 MPa) in the earlier theory.

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Solubilities of carbon dioxide and nitrogen in polystyrene under high temperature and pressure

Cited by 258 publications

References 13 publications

Maximal cell density predictions for compressible polymer foams

Maximal cell density predictions for compressible polymer foams

Effect of pressure and temperature on interfacial tension of poly lactic acid melt in supercritical carbon dioxide

Density-functional theory for polymer-carbon dioxide mixtures: A perturbed-chain SAFT approach

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