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Hydrophilic/hydrophobic IPN membranes for the pervaporation of ethanol-water mixture

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Summary

Pervaporation of ethanol-water mixture was examined on IPN membranes composed of hydrophilic polyurethane(PU) and hydrophobia polystyrene(PS). The IPN membranes showed preferential pervaporation of water over ethanol and revealed high permeation rate. As the content of hydrophobic PS was increased, the permeation rate decreased while the separation factor increased, indicating that the PS domains suppressed the swelling of the PU phase and reduced the plasticizing effect. The average diffusion coefficient, computed from the permeation rate and solubility, was highly dependent on the viscosity and concentration of the permeant in the membrane.

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Authors and Affiliations

  1. Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, Korea

    Young Keun Lee & Sung Chul Kim

Authors
  1. Young Keun Lee
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  2. Sung Chul Kim
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Lee, Y.K., Kim, S.C. Hydrophilic/hydrophobic IPN membranes for the pervaporation of ethanol-water mixture. Polymer Bulletin 20, 261–267 (1988). https://doi.org/10.1007/BF00261979

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