Feng Weixiao, Wen Yunhui, Sun Shuyi, Li Peifan, Shi Shaowei
State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
Small. 2024 Oct;20(40):e2405892. doi: 10.1002/smll.202405892. Epub 2024 Aug 8.
Nanoparticle surfactants have been widely used to construct structured liquids in oil-water systems. Less attention, though, has been given in non-aqueous systems, for example, oil-oil systems, mainly due to the lack of suitable surfactants. Here, by using newly developed molecular brush surfactants (MBSs) that form at the DMSO-silicone oil interface, the construction of all-oil microfluidic devices is reported with advanced functions. Due to the high interfacial activity of MBSs, Plateau-Rayleigh instabilities of liquid jets can be completely suppressed, leading to the production of liquid threads with jammed MBSs at the interface. Taking advantage of the 3D printing technique, all-oil microfluidic devices with complex structures can be constructed, showing promising applications in mass transmission, chemical separation, and material synthesis.
纳米颗粒表面活性剂已被广泛用于构建油水体系中的结构化液体。然而，在非水体系中，例如油-油体系，由于缺乏合适的表面活性剂，受到的关注较少。在此，通过使用在二甲基亚砜-硅油界面形成的新开发的分子刷表面活性剂（MBS），报道了具有先进功能的全油微流控装置的构建。由于MBS具有高界面活性，可完全抑制液体射流的普拉托-瑞利不稳定性，从而在界面处产生带有紧密排列MBS的液丝。利用3D打印技术，可以构建具有复杂结构的全油微流控装置，在传质、化学分离和材料合成方面显示出广阔的应用前景。
