Preparation of monodisperse W/O emulsions using a stainless-steel microchannel emulsification chip
Preparation of monodisperse W/O emulsions using a stainless-steel microchannel emulsification chip
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DOI：
10.1080/02726351.2017.1340380
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发表时间：
2019-01
影响因子：
2.5
通讯作者：
Ran Li;I. Kobayashi;Yanru Zhang;M. Neves;K. Uemura;M. Nakajima
中科院分区：
文献类型：
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作者：
Ran Li;I. Kobayashi;Yanru Zhang;M. Neves;K. Uemura;M. Nakajima
摘要采用疏水处理的不锈钢微通道阵列芯片制备单分散W/O乳状液。以含有5wt%缩合蓖麻油酸酯的单月桂酸四甘油酯的水饱和正庚烷为连续相。以含5wt%聚乙二醇(相对分子质量20000)和5wt%氯化钠的Milli-Q水为分散相。用于MC乳化的不锈钢MC阵列芯片在连续相中具有足够高的分散相与其表面的接触角。得到的水滴大小均匀，变异系数为<；5%，平均直径为100-300微米，具体取决于MC横截面大小。均匀大小水滴的最大生产率超过1mLh−1。在100um深度的MC中流动的分散相的临界毛细管数比在30um深度的MC中大1.5倍。
ABSTRACT In this study, hydrophobically treated stainless-steel microchannel (MC) array chips were used for preparing monodisperse W/O emulsions. A water-saturated decane containing 5 wt% tetraglycerin monolaurate condensed ricinoleic acid ester was used as the continuous phase. A Milli-Q water containing 5 wt% polyethylene glycol (molecular weight 20,000) and 5 wt% NaCl was used as the dispersed phase. The stainless-steel MC array chips used for MC emulsification had a sufficiently high contact angle of the dispersed phase to their surface in the continuous phase. The resultant uniform-sized aqueous droplets with a coefficient of variation of <5% had average diameters of 100–300 µm, depending on the MC cross-sectional size. The maximum productivity of uniform-sized aqueous droplets reached higher than 1 mL h−1. The difference in the critical capillary number of the dispersed phase that flows in a 100-µm depth MC was 1.5 times greater than that in a 30-µm depth MC.