Production of Monodispersed Oil-in-Water Emulsion Using Crossflow-Type Silicon Microchannel Plate

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A novel method for continuous production of monodispersed oil-in-water (O/W) emulsion is developed using a crossflow-type silicon microchannel plate. On the single crystal silicon plate, a liquid flow path for continuous phase was made, and at each side of the wall of the path an array of regular-sized slits was precisely fabricated. A flat glass plate was tightly attached on the microchannel plate to cover the top of the slits to form the array of microchannels. Regular-sized oil (triolein) droplets were generated by squeezing the oil through the microchannels into the continuous-phase water (0.3 wt% sodium lauryl sulfate solution) flowing in the liquid path. Oil droplet size is significantly dependent on the microchannel structure, which is identified with the microchannel width, height, and the length of the terrace (a flat area at the microchannel outlet). Three types of microchannel plates having different microchannel structures generate monodispersed emulsions of different average droplet sizes, 16, 20, and 48 μm at the water flow rate of 1.4 × 10<SUP>–2</SUP> mL·min<SUP>–1</SUP>. For the microchannel plate which generates large droplets of 48 μm, increasing the flow rate causes decreasing droplet size. However, for the microchannel plate which generates small droplets of 16 or 20 μm, the size is not affected by the flow rate within the range from 1.4 × 10<SUP>–2</SUP> to 2.4 mL·min<SUP>–1</SUP>. In every case, the droplet size distribution is narrow, and the geometric standard deviation is 1.03 or less.

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  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 32(2), 241-244, 1999-04 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10002067524
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    00219592
  • NDL 記事登録ID
    4702223
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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