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Liquid-Liquid Equilibria of Poly(4-vinylphenol)(PVPh)/Ethyl Acetate and PVPh/Butyl Acetate Solutions  

Kim, Mi Kyung (Department of Chemical Engineering, Kangwon National University)
Kim, Ki-Chang (Department of Chemical Engineering, Kangwon National University)
Publication Information
Korean Chemical Engineering Research / v.43, no.6, 2005 , pp. 704-714 More about this Journal
Abstract
Phase separations of Poly(4-vinylphenol)(PVPh)/Ethyl Acetate and PVPh/Butyl Acetate solutions were measured using the thermal optical analysis (TOA) method. The experimental phase separation data were correlated with liquid-liquid equilibria relations based on PC-SAFT equation of state. The phase separations of these system showed the behaviors of LCST (lower critical solution temperature)-type. The measured cloud temperatures were lowered with increasing in molecular weights of polymer(PVPh), and cloud temperatures of PVPh/Ethyl Acetate solutions shifted to lower temperature regions, compared to the PVPh/Butyl Acetate solutions. Extents of cross-association between solvent molecule and polymer in the PVPh/Ethyl Acetate solutions were measured using the FT-IR spectrum analysis method, and cross-association parameters of PC-SAFT model were estimated from experimental extents of cross-association. By using the estimated cross-association parameters between PVPh and solvent molecule, binodal and spinodal curves of liquid-liquid equilibria in PVPh/Ethyl Acetate and PVPh/Butyl Acetate solutions were calculated from PC-SAFT equation of state. The calculated binodal curves of these system were shown to be well agreeable with the experimental cloud temperature curves.
Keywords
Poly(4-vinylphenol); Ester; Phase Separations; PC-SAFT EoS; Cloud Temperature; Cross-Association;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Huang, S. H. and Radosz, M., 'Equation of State for Small, Large, Polydisperse, and Associating,' Ind. Eng. Chem. Res., 29(11), 2284-2294(1990)   DOI
2 Muller, E. A. and Gubbins, K. E., 'Molecular-Based Equations of state for Associating Fluids: A Review of SAFT and Related Approaches,' Ind. Eng. Chern. Res., 40(10), 2193-2211(2001)   DOI   ScienceOn
3 Gross, J. and Sadowski, G, 'Modeling Polymer Systems Using the Perturbed-Chain Statistical Associating Fluid Theory Equation of State,' Ind. Eng. Chern. Res., 41(5), 1084-1093(2002)   DOI   ScienceOn
4 Kouskoumvekaki, I. A., von Solms, N., Michelsen, M. L. and Kontogeorgis, G M., 'Application of the Perturbed Chain SAFT Equation of State to Complex Polymer Systems using Simplified Mixing Rules,' Fluid Phase Equilibria, 215,71-78(2004)   DOI   ScienceOn
5 Wolbach, J. P. and Sandler, S. I., 'Using Molecular Orbital Calculations to Describe the Phase Behavior of Hydrogen-Bonding Fluids,' Ind. Eng. Chern. Res., 36(10),4041-4051(1997)   DOI   ScienceOn
6 Pimentel, G C. and McClellan, A. L., 'The Hydrogen Bond,' Freeman Co., San Francisco(1960)
7 Reilly, J. T., Walsh, J. M., Greenfield, M. L. and Donohue, M. D., 'Analysis of FT-IR Spectroscopic Data: the Voigt Profile,' Spectrochimica Acta, 48A(10), 1459-1479(1992)
8 Daubert, T. E., Danner, R P., Sibul, H. M. and Stebbins, C. C., 'Physical and Thermodynamic Properties of Pure Chemical Data Compilation,' Taylor & Francis, Washington, DC(1989)
9 Lee, B.-C. and Danner, R P., 'Group-Contribution Lattice-Fluid £OS: Prediction of LLE In Polymer Solutions,' AICHE J., 42(11), 3223-3230(1996)   DOI   ScienceOn
10 Kim, M. K and Kim, K-C., 'Phase Equilibria of the Poly(4vinylphenol)/ketone Solutions,' Korean Chem. Eng. Res., 43(5), 579-587(2005)
11 Gross, J. and Sadowski, G, 'Application of Perturbation Theory to a Hard-Chain Reference Fluid: An Equation of State for Square-Well Chains,' Fluid Phase Equilibria, 168, 183-199(2000)   DOI   ScienceOn
12 Walsh, J. M., Greenfield, M. L., Ikonomou, G D. and Donohue, M. D., 'Hydrogen-Bonding Competition in Entrainer Cosolvent Mixtures,' Chem. Eng. Comm., 86, 125-144(1989)   DOI   ScienceOn
13 Van Dijk, M. A. and Wakker, A., 'Concepts of Polymer Thermodynamics,' Technomic, Lancaster(1997)
14 Gross, J., Spuhl, 0., Tumakaka F. and Sadowski, G, 'Modeling Copolymer Systems Using the Perturbed-Chain SAFT Equation of State,' Ind. Eng. Chern. Res., 42(6), 1266-1274(2003)   DOI   ScienceOn
15 Gupta, R B. and Johnston, K P., 'Lattice Fluid Hydrogen Bonding Model with a Local segment Density,' Fluid Phase Equilibria, 99, 135-151(1994)   DOI   ScienceOn
16 Sandler, S. I., 'Models for Thermodynamic and Phase Equilibria Calculations,' Marcel Dekker, Inc., New York(1994)
17 Barker, J. A. and Henderson, D., 'Perturbation Theory and Equation of State for Fluids: The Square- Well Potential,' J. of Chem. Phys., 47(8), 2856-2861(1967)   DOI
18 Yoo, K.-P., Shin, M. S., Yoo, S. J., You, S.-S. and Lee, C. S., 'A New Equation of State Based on Nonrandom Two-Fluid Lattice Theory for Complex Mixtures,' Fluid Phase Equilibria, 111, 175201(1995)   ScienceOn
19 Walsh, J. M., Greenfield, M. L., Ikonomou, G D. and Donohue, M. D., 'An FTIR Spectroscopic Study of Hydrogen-Bonding Competition in Entrainer-Cosolvent Mixtures,' International J. of Thermophysics, 11(1), 119-132(1990)   DOI
20 Gross, J. and Sadowski, G, 'Perturbed-Chain SAFT: An Equation of State Based on a Perturbation Theory for Chain molecules' Ind. Eng. Chern. Res., 40(4), 1244-1260(2001)   DOI   ScienceOn
21 Moskala, E. J., Howe, S. E., Painter, P. C. and Coleman, M. M., 'On the Role of Intermolecular Hydrogen Bonding in Miscible Polymer Blends,' Macromolecules, 17(9), 1671-1678(1984)   DOI
22 Widom, J. M., Philippe, R. J. and Hobbs, M. E., 'A Study of the Association of Phenol with several Ketones by Infrared Absorption Measurements,' J. of Amer. Chern Soc., 79(6), 1383-1386(1957)   DOI
23 Lacombe, R. H. andSanchez, I. C., 'Statistical Thermodynamics of Fluid Mixtures,' J. of Phys. Chem., 80(23), 2568-2580(1976)   DOI
24 Wolbach, J. P. and Sandler, S. I., 'Thermodynamics of Hydrogen Bonding from Molecular Orbital Theory: 2. Organics' AICHE J., 43(6), 1597-1604(1997)   DOI   ScienceOn
25 Olabisi, 0., Robenson, L. M. and Shaw, M. T., 'Polymer-Polymer Miscibility,' Academic Press, New York(1979)
26 Kontogeorgis, G M., Voutsas, E. C., Yakoumis, I. V. and Tassios, D. P., 'An Equation of State for Associating Fluids,' Ind. Eng. Chem. Res., 35(11), 4310-4318(1996)   DOI   ScienceOn
27 Chen, S.-J., Economou, I. G and Radosz, M., 'Density-Tuned Polyolefin Phase Equilibria. 2. Multicomponent Solutions of Alternating Poly(ethylene-propylene) in Subcritical and Supercritical Olefins, Experiment and SAFT Model,' Macromolecules, 25(19), 4987-4995(1992)   DOI