Modification of Polysulfone Membranes and Their Application to Gas Separations

Ji-Won Rhim; Jung-Ran Kim; You-In Park; Kew-Ho Lee

Journal of Industrial and Engineering Chemistry, Vol.7, No.5, 299-304, September, 2001

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Modification of Polysulfone Membranes and Their Application to Gas Separations

Ji-Won Rhim^†, Jung-Ran Kim, You-In Park¹, and Kew-Ho Lee¹

Department of Chemical Engineering, Hannam University, Daejon 306-791, Korea
¹Center for Separation Materials, Korea Research Institute of Chemical Technology, Daejon 305-600, Korea

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The surface of polysulfone membranes has been modified using the fluorine chemicals, PFPA (pentafluoropropionic anhydride F.W.=310.05) and TFI (Trideca-fluoro-8-idoctane, F.W.=474.0), based on Friedel-Crafts reaction mechanism with varying reaction temperatures, reaction time, and catalysis types. The resulting membranes were characterized through the analysis of ESCA, contact angle measurement and pure water permeability. And the modified PS membranes were exposed to gases of O2, N2, and CO2 to measure the permeation rates and ideal separation factors. In addition, the diffusivities and solubilities of individual gases were measured.

Keywords:polysulfone;modification;PFPA;TFI;ESCA;contact angles;pure water permeability;O2;N2;CO2;diffusivity;solubility

[References]

Kiplinger CL, Persico DF, Lagow RJ, Paul DR, J. Appl. Polym. Sci., 31, 2617 (1986)
Langsam M, U.S. Patent, 4,657,564 (1987)
Langsam M, Anand M, Karwacki EJ, Gas Sep. Purif., 2, 162 (1988)
Langsam M, Robeson LM, Polym. Eng. Sci., 29, 44 (1989)
Mohr JM, Paul DR, Mlsna TE, Lagow RJ, J. Membr. Sci., 55, 131 (1991)
Mohr JM, Ph.D. Dissertation, University of Texas at Austin (1990)
Mohr JM, Paul DR, Taru Y, Mlsna T, Lagow RJ, J. Membr. Sci., 55, 149 (1991)
Mohr JM, Paul DR, Taru Y, Mlsna T, Lagow RJ, J. Appl. Polym. Sci., 42, 2509 (1991)
Chiao CC, U.S. Patent, 4,828,585 (1989)
Langsam M, Savoca ACL, U.S. Patent, 4,759,776 (1988)
Mohr JM, Paul DR, Pinnau I, Koros WJ, J. Membr. Sci., 56, 77 (1991)
Cabasso I, in Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley and Sons, 3rd ed., New York, NY, 12, 492 (1980)
Baker RW, Blume I, Chemtech., 16(4), 232 (1986)
Spillman RW, Chem. Eng. Prog., 85(1), 41 (1989)
Leroux JD, Paul DR, Kampa J, Lagow RJ, J. Membr. Sci., 94, 121 (1994)
Leroux JD, Paul DR, Arendt M, Yuan Y, Cabasso I, J. Membr. Sci., 94, 143 (1994)
Rhim JW, Kim YK, J. Appl. Polym. Sci., 75(14), 1699 (2000)
Yeom CK, Kim BS, Lee JM, J. Membr. Sci., 161(1-2), 55 (1999)
Yeom CK, Lee JM, Hong YT, Choi KY, Kim SC, J. Membr. Sci., 166(1), 71 (2000)
McHattie JS, Koros WJ, Paul DR, Polymer, 32, 840 (1991)

[Referenced By]

[Related Articles]

[1] Kiplinger CL, Persico DF, Lagow RJ, Paul DR, J. Appl. Polym. Sci., 31, 2617 (1986)

[2] Langsam M, U.S. Patent, 4,657,564 (1987)

[3] Langsam M, Anand M, Karwacki EJ, Gas Sep. Purif., 2, 162 (1988)

[4] Langsam M, Robeson LM, Polym. Eng. Sci., 29, 44 (1989)

[5] Mohr JM, Paul DR, Mlsna TE, Lagow RJ, J. Membr. Sci., 55, 131 (1991)

[6] Mohr JM, Ph.D. Dissertation, University of Texas at Austin (1990)

[7] Mohr JM, Paul DR, Taru Y, Mlsna T, Lagow RJ, J. Membr. Sci., 55, 149 (1991)

[8] Mohr JM, Paul DR, Taru Y, Mlsna T, Lagow RJ, J. Appl. Polym. Sci., 42, 2509 (1991)

[9] Chiao CC, U.S. Patent, 4,828,585 (1989)

[10] Langsam M, Savoca ACL, U.S. Patent, 4,759,776 (1988)

[11] Mohr JM, Paul DR, Pinnau I, Koros WJ, J. Membr. Sci., 56, 77 (1991)

[12] Cabasso I, in Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley and Sons, 3rd ed., New York, NY, 12, 492 (1980)

[13] Baker RW, Blume I, Chemtech., 16(4), 232 (1986)

[14] Spillman RW, Chem. Eng. Prog., 85(1), 41 (1989)

[15] Leroux JD, Paul DR, Kampa J, Lagow RJ, J. Membr. Sci., 94, 121 (1994)

[16] Leroux JD, Paul DR, Arendt M, Yuan Y, Cabasso I, J. Membr. Sci., 94, 143 (1994)

[17] Rhim JW, Kim YK, J. Appl. Polym. Sci., 75(14), 1699 (2000)

[18] Yeom CK, Kim BS, Lee JM, J. Membr. Sci., 161(1-2), 55 (1999)

[19] Yeom CK, Lee JM, Hong YT, Choi KY, Kim SC, J. Membr. Sci., 166(1), 71 (2000)

[20] McHattie JS, Koros WJ, Paul DR, Polymer, 32, 840 (1991)