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Processable high internal phase Pickering emulsions using depletion attraction

Author

Listed:
  • KyuHan Kim

    (KAIST)

  • Subeen Kim

    (KAIST)

  • Jiheun Ryu

    (KAIST)

  • Jiyoon Jeon

    (KAIST)

  • Se Gyu Jang

    (Applied Quantum Composites Research Center, Korea Institute of Science Technology (KIST))

  • Hyunjun Kim

    (KAIST)

  • Dae-Gab Gweon

    (KAIST)

  • Won Bin Im

    (School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University)

  • Yosep Han

    (Chonbuk National University)

  • Hyunjung Kim

    (Chonbuk National University)

  • Siyoung Q. Choi

    (KAIST)

Abstract

High internal phase emulsions have been widely used as templates for various porous materials, but special strategies are required to form, in particular, particle-covered ones that have been more difficult to obtain. Here, we report a versatile strategy to produce a stable high internal phase Pickering emulsion by exploiting a depletion interaction between an emulsion droplet and a particle using water-soluble polymers as a depletant. This attractive interaction facilitating the adsorption of particles onto the droplet interface and simultaneously suppressing desorption once adsorbed. This technique can be universally applied to nearly any kind of particle to stabilize an interface with the help of various non- or weakly adsorbing polymers as a depletant, which can be solidified to provide porous materials for many applications.

Suggested Citation

  • KyuHan Kim & Subeen Kim & Jiheun Ryu & Jiyoon Jeon & Se Gyu Jang & Hyunjun Kim & Dae-Gab Gweon & Won Bin Im & Yosep Han & Hyunjung Kim & Siyoung Q. Choi, 2017. "Processable high internal phase Pickering emulsions using depletion attraction," Nature Communications, Nature, vol. 8(1), pages 1-8, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14305
    DOI: 10.1038/ncomms14305
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