Abstract
Silica was succesfully incorporated into cation exchange polymer membranes, CL-25T and Nafion 417, utilizing sol-gel process. As dipping time increased, increase in silica uptake in membrane was observed. In Nafion 417 membrane, no relationship was found between the silica uptake and the change in ion exchange capacity. But CL-25T which has larger pores than Nafion 417 shows proportional decrease in ion exchange capacity with increasing silica uptake. It suggests that the pore structure of membrane and the size control of silica sol are important to modify the structure of composite membranes. In CL-25T membranes modified by silica, the transport rate of IPA (isopropyl alcohol) increased with increasing OH- concentration on the pore surface.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bloembergen, N., “Nonlinear Optics”, Renjarnin, New York, 1965.
Breck, D. W., “Zeolite Molecular Sieves”, John Wiley & Sons, New York, 1974.
Brinker, C.J. and Scherer, G. W., “Sol-Gel Science”, Academic Press, New York, 1990.
Helfferich, F., “Ion Exchange”, McGraw-Hill, New York, 1962.
Henry, L. L. and Urich, D. R., “Ultrastructure Processing of Ceramic Glass and Composites”, Wiley, New York, 1984.
Hiroshi, A., Takayuki, S. and Toshiki, G., European Patent Application 0031660, 1981.
Mauritz, K. A., Storey, R. F. and Jones, C. K., “Perfluorinated-Inomer-Membrane-Based Microcomposites”, ACS. Symp., Washington DC., 395 (1989).
Michael, F., “Infrared Spectra of Perfluoro Sulfonated Polymer Membranes”, ACS. Symp., Washington DC., 139(1982).
Stegeman, G. I., “Wave-Guides and Fibers for Nonlinear Optics”,J. Opt. Soc. Am. Bull.,6, 652 (1989).
Xiong, Y., Jialing, L. and Hong, S., “Bubble Effect on Ion-Exchange Membranes-An Electrochemical Study”, J. Appl. Electrochem., 22 (1992).
Yawatawa, D., “Ion Exchange Membrane”, Tokyo, 1982.
Yoshio, O., Takeasi, M. and Kohji, S., UK Patent Application GB 2064586 A, 1981.
Zeldin, W. and Allcock, “Inorganic and Organic Polymers”, ACS Symp., Washington DC., 360 (1988).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, H.S., Han, J.W., Chun, K.Y. et al. Synthesis of organic-inorganic composite membrane by sol-gel process. Korean J. Chem. Eng. 12, 405–409 (1995). https://doi.org/10.1007/BF02705802
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02705802