典型文献
Determination of interfacial tension and viscosity under dripping flow in a step T-junction microdevice
文献摘要：
Microfluidic approaches for the determination of interfacial tension and viscosity of liquid-liquid systems still face some challenges.One of them is liquid-liquid systems with low interfacial and high viscosity,because dripping flow in normal microdevices can't be easily realized for the systems.In this work,we designed a capillary embedded step T-junction microdevice to develop a modified microfluidic approach to determine the interfacial tension of several systems,specially,for the systems with low interfacial ten-sion and high viscosity.This method combines a classical T-junction geometry with a step to strengthen the shear force further to form monodispersed water/oil(w/o)or aqueous two-phase(ATP)droplet under dripping flow.For systems with low interfacial tension and high viscosity,the operating range for drip-ping flow is relative narrow whereas a wider dripping flow operating range can be realized in this step T-junction microdevice when the capillary number of the continuous phase is in the range of 0.01 to 0.7.Additionally,the viscosity of the continuous phase was also measured in the same microdevice.Several different systems with an interfacial tension from 1.0 to 8.0 mN·m-1 and a viscosity from 0.9 to 10 mPa·s were measured accurately.The experimental results are in good agreement with the data obtained from a commercial interfacial tensiometer and a spinning digital viscometer.This work could extend the aDDlication of microfluidic flows.
文献关键词：
中图分类号：
作者姓名：
Li Ma;Yongjin Cui;Lin Sheng;Chencan Du;Jian Deng;Guangsheng Luo
作者机构：
State Key Laboratory of Chemical Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Li Ma;Yongjin Cui;Lin Sheng;Chencan Du;Jian Deng;Guangsheng Luo-.Determination of interfacial tension and viscosity under dripping flow in a step T-junction microdevice)[J].中国化学工程学报（英文版）,2022(02):210-218
A类：
microdevice,tensiometer,aDDlication
B类：
Determination,interfacial,tension,viscosity,under,dripping,step,junction,Microfluidic,approaches,determination,liquid,systems,still,face,some,challenges,One,them,high,because,normal,microdevices,can,easily,realized,In,this,work,designed,capillary,embedded,develop,modified,microfluidic,determine,several,specially,This,method,combines,classical,geometry,strengthen,shear,force,further,form,monodispersed,water,oil,aqueous,two,phase,ATP,droplet,For,operating,range,relative,narrow,whereas,wider,when,number,continuous,Additionally,was,also,measured,same,Several,different,from,mN,mPa,were,accurately,experimental,results,are,good,agreement,data,obtained,commercial,spinning,digital,viscometer,could,extend,flows
AB值：
0.452558
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