TERNARY PHASE DIAGRAM FOR POLYMER/ SOLVENT/ SUPERCRITICAL-CO2 BY SANCHEZ-LACOMBE MODEL (RESEARCH NOTE)

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LOTF ELAHI M.N.; DEYLAM SALEHI R.; MODARES H.

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Journal: IRANIAN JOURNAL OF CHEMICAL ENGINEERING Year:2006 | Volume:3 | Issue:2 Page(s): 64-72

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Title

TERNARY PHASE DIAGRAM FOR POLYMER/ SOLVENT/ SUPERCRITICAL-CO2 BY SANCHEZ-LACOMBE MODEL (RESEARCH NOTE)

Author(s)

LOTF ELAHI M.N. | DEYLAM SALEHI R. | MODARES H. | Issue Writer Certificate

Keywords

HIGH PRESSURE

PHASE DIAGRAM

SANCHEZ-LACOMBE (SL) MODEL

POLYMER SOLVENT- SCF

TERNARY MIXTURES

Abstract

Ternary PHASE DIAGRAMs for [polyethylene (Mw=420,000, Mw/Mn=2.6) / n-butane/ carbon dioxide), [polypropylene (Mw=290,000, Mw/Mn=I.32)/ n-pentane/carbon dioxide) and [polystyrene (Mw=187,000)/ cyclohexane/ carbon dioxide) have been generated using the Sanchez-Lacombe (SL) lattice-fluid model. The results show that at relatively low pressure, the ternary PHASE DIAGRAM has a L-L-V three-phase region bounded by two two-phase regions (L-V and L-L), At HIGH PRESSURE, L-L-V and L-V regions disappear and only the L-L region remains. With an increase of pressure this two-phase L-L region becomes smaller. This model can also predict transition LCST to UCST by increasing pressure. For polystyrene/ cyclohexanel carbon dioxide mixture, the calculated results obtained using the SL-model are compared with the reported calculated results created by the perturbed hard-sphere chain model (PHSC) and the reported experimental data which indicate good agreement with both the calculated results by PHSC-model and experimental data.

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APA: Copy

LOTF ELAHI, M.N., DEYLAM SALEHI, R., & MODARES, H.. (2006). TERNARY PHASE DIAGRAM FOR POLYMER/ SOLVENT/ SUPERCRITICAL-CO₂ BY SANCHEZ-LACOMBE MODEL (RESEARCH NOTE). IRANIAN JOURNAL OF CHEMICAL ENGINEERING, 3(2), 64-72. SID. https://sid.ir/paper/298208/en

Vancouver: Copy

LOTF ELAHI M.N., DEYLAM SALEHI R., MODARES H.. TERNARY PHASE DIAGRAM FOR POLYMER/ SOLVENT/ SUPERCRITICAL-CO₂ BY SANCHEZ-LACOMBE MODEL (RESEARCH NOTE). IRANIAN JOURNAL OF CHEMICAL ENGINEERING[Internet]. 2006;3(2):64-72. Available from: https://sid.ir/paper/298208/en

IEEE: Copy

M.N. LOTF ELAHI, R. DEYLAM SALEHI, and H. MODARES, “TERNARY PHASE DIAGRAM FOR POLYMER/ SOLVENT/ SUPERCRITICAL-CO₂ BY SANCHEZ-LACOMBE MODEL (RESEARCH NOTE),” IRANIAN JOURNAL OF CHEMICAL ENGINEERING, vol. 3, no. 2, pp. 64–72, 2006, [Online]. Available: https://sid.ir/paper/298208/en

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