Fabrication of Porous Clay Materials with Aligned Pore Structures by Freeze-Drying

  • Hwang H
  • Kim D
  • Moon J
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Porous clay materials with columnar type pore channels were fabricated from water-based clay slurry and a specially designed mold by using a freeze casting technique. Ice was stimulated to grow vertical direction, and aligned macro pores were formed to the same direction. The phase separation between the ice and clay particles might be responsible for the formation of the columnar type pores. It appears that it is possible to control the size and morphology of pores by modifying a freezing mold, refrigerant temperature, and the weight fraction of clay in slurry.

Author-supplied keywords

  • abstract
  • and aligned macro pores
  • clay
  • clay slurry and a
  • columnar type pore channels
  • freeze-drying
  • grow vertical direction
  • ice was stimulated to
  • microstructure control
  • porous clay materials with
  • porous materials
  • same direction
  • specially designed mold by
  • technique
  • the phase
  • using a freeze casting
  • were fabricated from water-based
  • were formed to the

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  • Hae-Jin Hwang

  • Do Yeon Kim

  • Ji-Woong Moon

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