| 摘要 |
PROBLEM TO BE SOLVED: To provide a microchannel structure capable of producing microparticles having such a uniform grain size that the grain size dispersion of the microparticles produced in a channel on the intersection part between a dispersion phase flowing in the microchannel and a continuous phase which intersects the dispersion phase becomes less than 10%. SOLUTION: The microchannel structure is provided with: at least one dispersion phase introducing port and dispersion phase introducing channel which introduce a dispersion phase; at least one continuous phase introducing port and continuous phase introducing channel which introduces a continuous phase; a liquid supply channel to a discharge channel from the intersection part on which the dispersion phase introducing channel and the continuous phase introducing channel intersect each other; and the discharge channel and a discharge port which discharge the microparticles prepared from the dispersion phase according to shear force between the continuous phase and the wall surface of channel on the intersection part and on the neighborhood thereof, on one of branches which are branched at a branching part of the end part on the downstream side of the liquid supply channel, and a sub discharge channel and a sub discharge port which discharge the by-product particles incidentally produced upon the microparticle preparation, on the other branch. Therein, such a microchannel structure that the dispersion phase introducing channel and the continuous phase introducing channel intersect each other on the intersection part at an arbitrary angle is used. COPYRIGHT: (C)2006,JPO&NCIPI
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