Abstract
This review paper introduces the preparation of porous PDMS membranes and the development of a new membrane separation technique for the concentration of bio-ethanol. Porous PDMS membranes were prepared by freeze-drying aqueous emulsions of organopolysiloxane, and were applied to a temperature-difference controlled evapomeation (TDEV) method developed as a new membrane separation technique. When the temperature of membrane surroundings was lowered, while keeping the temperature of the feed solution constant. The permeation rate of porous membrane in TDEV was higher by three orders of magnitude than that of dense membrane, although the ethanol/water selectivity was almost the same to each other. The relationship between the permeation and separation characteristics of porous PDMS membrane was discussed.
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Uragami, T. Structural Design of Polymer Membranes for Concentration of Bio-ethanol. Polym J 40, 485–494 (2008). https://doi.org/10.1295/polymj.PJ2008015
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DOI: https://doi.org/10.1295/polymj.PJ2008015
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