Premium
Study on the transient interfacial tension in a microfluidic droplet formation coupling interphase mass transfer process
Author(s) -
Lan Wenjie,
Wang Che,
Guo Xuqiang,
Li Shaowei,
Luo Guangsheng
Publication year - 2016
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.15217
Subject(s) - interphase , surface tension , mass transfer , dispersion (optics) , chemistry , coupling (piping) , transient (computer programming) , mechanics , flow (mathematics) , microfluidics , phase (matter) , thermodynamics , tension (geology) , process (computing) , materials science , chromatography , nanotechnology , composite material , optics , physics , organic chemistry , ultimate tensile strength , genetics , computer science , biology , operating system
In two‐phase dispersion coupling interphase mass transfer process, the variation of interfacial tension is an important factor affecting the dispersion. In this study, we described a microfluidic method for the determination of the transient interfacial tension (TIFT). The method has the advantage of determining TIFT during the whole droplet formation process, rather than only at the rupture moment as reported in previous studies. The TIFTs of several systems were determined. In certain systems, it has been found that the droplet size decreased with the increase of the dispersed phase flow rate, which is obviously different from the constant interfacial tension system. It has also been found that TIFT was mainly affected by two‐phase flow rates, solute type and concentration, and droplet size. A semiempirical equation was finally established to predict TIFT. It has the potential to be used in a variety of industrial equipment with dispersion–mass transfer coupling process. © 2016 American Institute of Chemical Engineers AIChE J , 62: 2542–2549, 2016