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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

Abstract

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.

Keywords

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.

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Reference Citation

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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

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