Polymer Gels pp 173-181 | Cite as

Permeation Mechanism for a Thermo-Sensitive Switching-Functional Composite Membrane of Porous Glass and Hydrogel

  • Mikio Konno
  • Tomoya Tsuji
  • Shozaburo Saito


An attempt was made to prepare a thermo-sensitive membrane with switching ability. The membrane was made of porous glass and N-isopropylacrylamide gel, whose volume-phase transition is of a thermo-shrinking type. Permeation experiments have demonstrated that the composite membrane functioned as an ultrafiltration membrane, of which the cut-off molecular weight and solution permeation rate dramatically changed on the volume-phase transition. To make clear the permeation mechanism of the membrane, additional experiments were carried out, in which the diffusion rates of 3H-labeled water through the membrane were measured at various temperatures. Experimental results enabled the pore radii in the gel to be estimated. It is shown that the rejection characteristics of the membrane are predictable from the pore radii estimated.


Composite Membrane Pore Radius Porous Glass Volume Flux Diffusion Experiment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Reference Citation

  1. Chmelir, M., Kunschner, A. and Barthell, E., 1980, Water soluble acrylamide polymer. 2. Aging and viscous flow of aqueous solution of polyacrylamde and hydrolyzed Polyacrylamide, Antewalt. Makromol. Chem., 89:145CrossRefGoogle Scholar
  2. Hirokawa, Y. and Tanaka, T., 1984, Volume phase transition in a nonionic gel, J. Chem. Phys., 81:6379CrossRefGoogle Scholar
  3. Ohmine, I. and Tanaka, T., 1982, Salt effect on the phase transition of ionic gels,: J. Chem. Phys., 77:5735CrossRefGoogle Scholar
  4. Otake, K., Tsuji, T., Konno, M. and Saito, S., 1988, Permeation of a new hydrogel and porous glass composite membrane, J. Chem. Eng. Japan, 21:443CrossRefGoogle Scholar
  5. Spiegler, K. S. and Kedem, O., 1966, Thermodynamics of hyperfiltration (reverse osmosis): criteria for efficient membranes, Desalination, 1:311 (1966)CrossRefGoogle Scholar
  6. Tanaka, T., 1981, Gel, Science, 244:1241Google Scholar
  7. Tanaka, T., Fillmore, D. J., Sun, S. T., Nishio, I., Swislow, G. and Shah, A., 1980, Phase transition in ionic gels, Phys. Rev. Lett., 45:1636CrossRefGoogle Scholar
  8. Tanaka, T., Nishio, I., Sun, S. T. and Nishio, S., 1982, Colaspes of gels in electric field, Science, 218:467PubMedCrossRefGoogle Scholar
  9. Tsuji, T., Otake, K., Konno, M. and Saito, S., 1989, Permeation characteristics of porous glass and hydrogel composite membrane, submitted to J. Appl. Polym. Sci.Google Scholar
  10. Verniory, A., Dubois, R., Decoodt, P., Gassee, J. P. and Lambert, P. P., 1973, Measurement of the permeability of biological membranes, J. Gen. Physiol., 62:489PubMedCrossRefGoogle Scholar
  11. Wang, J. H., Robinson C. V. and Edelman, I. S., 1953, Self-diffusion and structure of liquid water. 3. Measurement of the self-diffusion of liquid water with H2, H3 and O18 as tracers, J. Am. Chem. Soc, 76: 446Google Scholar
  12. Wendt, R. P., Klein, E., Bresler, E. H., Holland, F. F., Serino, R. M. and Villa, H., 1979, Sieving propaties of hemodialysis membrane, J. Memb. Sci., 5:23CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • Mikio Konno
    • 1
  • Tomoya Tsuji
    • 1
  • Shozaburo Saito
    • 1
  1. 1.Department of Chemistry and EngineeringTohoku UniversitySendaiJapan

Personalised recommendations