相転換法による膜構造制御  [in Japanese] Membrane Structure Controlled by Phase Inversion Process  [in Japanese]

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Author(s)

Abstract

The control of 3-dimensions membrane structure is of primary concern in the development of new separation membranes. Here, a new possibility for separation membrane is presented using a phase inversion process. The structure of the asymmetric membrane fabricated by a dry/wet phase inversion process showed an ultrathin skin layer and sponge-like structure characterized by the presence of macrovoids. We have prepared a series of asymmetric membranes with different defect-free skin layer thicknesses from 10 to 5.0×10<SUP>3</SUP>nm by the dry/wet phase inversion.The gas selectivity of the asymmetric membrane increases with a decrease in the surface skin layer thickness, which may be due to the fact that the surface skin layer of the membrane with a thinner thickness forms a more packed structure. On the other hand, porous membranes with nanoscale pore sizes are of interest in areas such as catalysis, sensors, size-and shape-selective separation media, adsorbents, and scaffolds for composite materials synthesis.Those with pore sizes on the order of 1nm to 10μm are required. A new possibility for porous membrane is presented using a phase inversion process.

Journal

  • MEMBRANE

    MEMBRANE 26(3), 110-115, 2001-05-01

    THE MEMBRANE SOCIETY OF JAPAN

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Codes

  • NII Article ID (NAID)
    10008010464
  • NII NACSIS-CAT ID (NCID)
    AN0023215X
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    03851036
  • NDL Article ID
    5788454
  • NDL Source Classification
    ZR2(科学技術--生物学--生化学)
  • NDL Call No.
    Z18-1127
  • Data Source
    CJP  NDL  J-STAGE 
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