微通道内表面活性剂与界面传递现象研究进展

Progress on surfactant and interfacial transport phenomena in microchannels

表面活性剂在微流体应用中具有重要作用,常伴随动态界面传递现象。综述了微通道内含表面活性剂的多相流研究进展,剖析了液滴尺寸、液体流变性、压力降与微流体中动态界面张力的关系。总结了表面活性剂作用下的界面传递现象,如气泡及液滴的生成、运动、形变、破裂和聚并动力学的研究进展。综述了微流体中表面活性剂的吸附动力学,对该领域的发展方向进行了展望。

Surfactants play an important role in microfluidic applications,often accompanied by dynamic interfacial tension.The research progress of multiphase flow containing surfactants in microchannels is reviewed,and the relationship between droplet size,liquid rheology,pressure drop and dynamic interfacial tension in microfluidics is analyzed.The interfacial transport phenomena under the action of surfactants,such as the formation,movement,deformation,breakup and coalescence of bubbles and droplets are summarized.The adsorption kinetics of surfactants in microfluidics are reviewed,and research directions in this field for the future are prospected.