Abstract
The transport properties of CO2 and CH4 for TMSPSf (bisphenol A trimethylsilylated polysulfone) were measured, and compared with the values for PSf (bisphenol A polysulfone) and MPSf (bisphenol A methylated polysulfone) to explain the effect of molecular structure of polysulfones on gas transport properties. The permeability coefficients of three polysulfones rank in the order: TMSPSf>PSf>MPSf. TMSPSf is several times more permeable than PSf. The effect of the substituents on chain packing was related to the gas transport properties. The ranking of permeability coefficient correlates well with fractional free volume. The variation of d-spacing is also reasonably consistent with the permeability coefficient. The effects of pressure on the sorption and permeation properties of polysulfones were examined. The permeation properties for a mixture of CO2 and CH4 were also measured and these results were compared with the values of pure gases. The sorbed concentrations and permeability coefficients are well fitted to dual mode model. The permeability coefficients of each gas of binary mixture are reduced than those for pure gases, and the extent of reduction in permeability coefficient is the smallest for TMSPSf, which has the highest value of Langmuir capacity constant.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aitken, C. L., Koros, W. J. and Paul, D. R., “Effect of Structural Symmetry on Gas Transport Properties of Polysulfones”,Macromolecules,25, 3424 (1992).
Balta-Calleja, F. J. and Vonk, C. G., “The Theory of Coherent X-Ray Scattering”, in “X-Ray Scattering of Synthetic Polymers”, Elsevier, Amsterdam, The Netherlands, 1 (1989).
Bhide, B. D. and Stern, S. A., “Membrane Processes for the Removal of Acid Gases from Natural Gas. I. Process Configurations and Optimization of Operating Conditions”,J. Membrane Sci.,81, 209 (1993).
Bollinger, W. A., MacLean, D. S. and Narayan, R. S., “Separation Systems for Oil Refining and Production”,Chem. Eng. Prog., Oct., 27 (1982).
Bondi, A., “Van der Waals Volume and Radii”,J. Phys. Chem,68, 441 (1964).
Chern, R. T., Koros, W. J., Yuri, B., Hopenberg, H. B. and Stanett, V. T., “Selective Permeation of CO2 and CH4 through Kapton Polyimide; Effects of Penetrant Competition and Gas Phase Nonideality”,J. Polym. Sci, Part B, Polym. Phys. Ed,22, 1061 (1984).
Ghosal, K., Freeman, B. D., Chern, R. T., Alvarez, J. C., de la Campa, J. G., Lozano, A. E. and de Abajo, J., “Gas Separation Properties of Aromatic Polyamides with Sulfone Groups”,Polymer,36, 793 (1995).
Ghosal, K., Chern, R. T., Freeman, B. D., Daly, W. H. and Negulescu, I.I., “Effect of Basic Substituents on Gas Sorption and Permeation in Polysulfones”,Macromolecules,29, 4360 (1996).
Guiver, M. D., Kutowy, O. and ApSimon, J. W., “Functional Group Polysulphones by Bromination-Metalation”,Polymer,30, 1137 (1989a).
Guiver, M. D., ApSimon, J. W. and Kutowy, O., “Preparation of Substituted Polysulfones through Ortho-Metalated Intermediates”, U. S. Patent 4,797,457 (1989b).
Hong, S. I., Kim, H. J., Park, H. Y., Kim, T. J. and Jeong, Y. S., “Study of Polysulfone Membrane for Membrane-Covered Oxygen Probe System”,J. of Korean Ind. & Eng. Chemistry,7, 877 (1996).
Ichiraku, Y., Stern, S. A. and Nakagawa, T., “An Investigation of the High Gas Permeability of Poly(l-trimethylsilyl-1-propyne)”,J. Membrane Sci.,34, 5 (1987).
Jacobson, S. H., “Computer Assisted Analysis of X-Ray Scattering for Polymeric Gas Separation and Barrier Materials”,Polym. Prepr.,32, 39 (1991).
Resting, R. E. and Fritsche, A. K., “Theory of Gas Transport in Membranes”, in “Polymeric Gas Separation Membranes”, John Wiley & Sons, New York, NY, 19 (1993).
Kim, H. J. and Hong, S. I., “The Sorption and Permeation of CO2 and CH4 for Dimethylated Polysulfone Membrane”,KJChE,14(3), 168 (1997).
Kim, T. H., Koros, W. J., Husk, G. R. and O’Brien, K. C., “Relationship between Gas Separation Properties and Chemical Structure in a Series of Aromatic Polyimides”,J. Membrane Sci.,37, 45 (1988).
Koros, W. J. and Chern, R. T., “Separation of Gaseous Mixtures Using Polymer Membranes”, in Rousseau, R. W. (Ed.), “Handbook of Separation Process”, Wiely-Interscience, New York, NY, 862 (1987).
Koros, W. J. and Fleming, G. K., “Membrane-Based Gas Separation”,J. Membrane Sci.,83, 1 (1993).
McHattie, J. S., Koros, W. J. and Paul, D. R., “Effect of Isopropylidene Replacement on Gas Transport Properties of Polycarbonates”,J. Polym. Sci, Part B, Polym. Phys. Ed.,29, 731 (1991a).
McHattie, J. S., Koros, W. J. and Paul, D. R., “Gas Transport Properties of Polysulphones: 1. Role of Symmetry of Methyl Group Placement on Bisphenol Rings”,Polymer,32, 840 (1991b).
McHattie, J. S., Koros, W. J. and Paul, D. R., “Gas Transport Properties of Polysulphones: 2. Effect of Bisphenol Connector Groups”,Polymer,32, 2618 (1991c).
McHattie, J. S., Koros, W. J. and Paul, D. R., “Gas Transport Properties of Polysulphones: 3. Comparison of Tetramethyl-Substituted Bisphenols”,Polymer,33, 1701 (1992).
Mulder, M., “Materials and Material Properties”, in “Basic Principles of Membrane Technology”, Kluwer Academic Publishers, Dordrecht, The Netherlands, 17 (1991).
Muruganandam, N., Koros, W. J. and Paul, D. R., “Gas Sorption and Transport in Substituted Polycarbonates”,J. Polym. Sci, PartB, Polym. Phys. Ed.,25, 1999 (1987).
Paul, D. R. and Koros, W. J., “Effect of Partially Immobilizing Sorption and Permeability on the Diffusion Time Lag”,J. Polym. Sci, Part B, Polym. Phys. Ed.,14, 675 (1976).
Pixton, M. R. and Paul, D. R., “Gas Transport Properties of Adamantane-Based Polysulfones”,Polymer,36, 3165 (1995).
Rautenbach, R. and Welsch, K., “Treatment of Landfill Gas by Gas-Permeation-Pilot Plant Results and Comparison to Alternatives”,J. Memrane Sci.,87, 107 (1994).
Stern, S. A., “Polymers for Gas Separations: The Next Decade”,J. Membrane. Sci.,94, 1 (1994).
Van Krevelen, D. W., “Volumetric Properties”, in “Properties of Polymers”, Elsevier, Amsterdam, The Netherlands, 71 (1990).
Vieth, W. R., Tam, P. M. and Michaels, A. S., “Dual Sorption Mechanisms in Glassy Polystyrenes”,J. Colloid Interface Sci.,22, 360 (1966).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, HJ., Hong, SI. The transport properties of CO2 and CH4 for trimethylsilylated polysulfone membrane. Korean J. Chem. Eng. 14, 382–389 (1997). https://doi.org/10.1007/BF02707056
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02707056