Fabrication of highly structural hollow fiber membranes using a microfluidic device

中空纤维膜因其良好的空间利用效率而受到水处理工艺的关注。本研究利用微流控技术制备中空纤维膜，在微米尺度上对其结构进行精细控制。利用十字形微通道结构，在不良溶剂层流中形成含疏水聚合物的好溶剂管状层流，成功转化为固体疏水微纤维。此外，一种具有两个交叉形状微通道结构的微流控装置适用于中空微纤维的制备。

Hollow fiber membranes have attracted attention to water treatment processes due to their good space efficiency. In this study, microfluidic techniques have been developed to fabricate hollow fiber membranes finely controlled their structure in micrometer scale. Using a cross-shaped microchannel structure, a tubular laminar flow of good solvent containing with hydrophobic polymers, used for membrane materials, was formed in a laminar flow of poor solvent, and was successfully transformed to solid, hydrophobic microfibers. Furthermore, a microfluidic device with two cross-shaped microchannel structures was applicable to fabrication of hollow microfibers.