Membranes Composed of Carboxylated Poly(vinyl chloride) and Poly(dimethylsiloxane)-graft-polystyrene: Preparation and Gas Permeability

Hee-Jun Kim; Yong-Seob Jeong; Youn-Sik Lee

Journal of Industrial and Engineering Chemistry, Vol.5, No.1, 69-73, March, 1999

Hee-Jun Kim, Yong-Seob Jeong¹, and Youn-Sik Lee^†

Faculty of Chemical Engineering & Technology, Chonbuk National University, Chonju 561-756, Korea
¹Faculty of Biotechnolgy, Chonbuk National University, Chonju 561-756, Korea

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Poly(dimethylsiloxane)-graft-polystyrene (PDMS-g-PS) was synthesized, and blended with carboxylated poly(vinyl chloride) (CPVC) in tetrahydrofuran in order to prepare gas-permeable and enzyme-immobilizable membranes that can be used for biosensors. The blend polymers form flexible free-standing membranes when the ratio of CPVC to PDMS-g-PS is 5 : 1 or greater. The permeability coefficients for carbon dioxide and oxygen in the blend membranes increase with the content of PDMS-g-PS. For example, the permeability coefficients for carbon dioxide and oxygen in the membranes composed of CPVC and PDMS-g-PS in 5 : 1 ratio by weight are 13 and 21 times greater, respectively, than those in the CPVC membranes. According to the experimental results obtained from differential scanning calorimetry and scanning electron microscopy, the membranes composed of the two polymers are phase-separated, and the size of PDMS domain in the CPVC matrix increases with the content of PDMS-g-PS. This suggests that the gases permeate through mainly the PDMS domains dispersed in the continuous CPVC phase.

Keywords:Poly(dimethylsiloxane)-graft-polystyrene;carboxylated poly(vinyl chloride);membrane;permeability coefficient

[References]

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[Referenced By]

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[1] Park JY, Paul DR, J. Membr. Sci., 125(1), 23 (1997)

[2] Kawakami Y, Prog. Polym. Sci., 19, 203 (1994)

[3] Ward WJ, Browall WR, Salemme RM, J. Membr. Sci., 1, 99 (1976)

[4] Kawakami Y, Aoki H, Hisada Y, Yamamura Y, Yamashita Y, Polym. Commun., 26, 133 (1985)

[5] Kawakami Y, Karasawa T, Aoki T, Yamamura Y, Hisada H, Yamashita Y, Polym. J., 17, 1159 (1985)

[6] Kawakami Y, Karasawa H, Kamiya H, Yamashita Y, Polym. J., 18, 237 (1986)

[7] Kawakami Y, Kamiya H, Toda H, Yamashita Y, J. Polym. Sci. A: Polym. Chem., 25, 3191 (1987)

[8] Kawakami Y, Sugisaka T, Yamashita Y, Polym. J., 20, 685 (1988)

[9] Kawakami Y, Toda H, Higashino M, Yamashita Y, Polym. J., 20, 285 (1988)

[10] Kawakami Y, Sugisaka T, J. Membr. Sci., 50, 189 (1990)

[11] Shim JS, Kim UY, Kang YS, Kim BG, Hong JM, J. Korean Ind. Eng. Chem., 1(2), 140 (1990)

[12] Nishide H, Ohyanagi M, Okada O, Tsuchida E, Macromolecules, 19, 494 (1986)

[13] Nishide H, Ohyanagi M, Okada O, Tsuchida E, Macromolecules, 20, 417 (1987)

[14] Delaney MS, Reddy D, Wessling RA, J. Membr. Sci., 49, 15 (1990)

[15] Hong JM, Lee SW, J. Ind. Eng. Chem., 3(3), 165 (1997)

[16] Eggins BR, Biosensor: An Introduction, John Wiley & Sons and B.G. Teubner (1996)

[17] Takemoto K, Inaki Y, Ottenbrite RM, Functional Monomers and Polymers, Marcel Dekker, Inc., New York and Basel, pp. 461-539 (1987)

[18] Yim HS, Kibbey CE, Ma SC, Kliza DM, Liu D, Park SB, Torre CE, Meyerhoff ME, Biosensors Bioelectronics, 8, 1 (1993)

[19] Kawakami Y, Aoki T, Yamashita Y, Kobunshi Ronbunshu, 43, 741 (1986)

[20] Stevens MP, Polymer Chemistry, 2nd Ed., p. 223, Oxford University Press, Inc. (1990)

[21] Im CW, Kim WY, Lee YS, Jeong YS, J. Korean Ind. Eng. Chem., Submitted (1998)

[22] Polymer Handbook, 2nd Ed., J. Brandrup, E.H. Immergut, Eds., Wiley-Interscience: New York (1975)