ISSN: 0256-1115 (print version) ISSN: 1975-7220 (electronic version)
Copyright © 2024 KICHE. All rights reserved

Articles & Issues

Language
English
Conflict of Interest
In relation to this article, we declare that there is no conflict of interest.
Publication history
Received June 24, 2014
Accepted February 16, 2015
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.

All issues

Microfluidic room temperature ionic liquid droplet generation depending on the hydrophobicity and interfacial tension

Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 N Cramer Street, Milwaukee, WI 53211, USA 1Department of Biological Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Korea 2Department of Biomedical Engineering, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwondo 220-710, Korea
wjchang@uwm.edu
Korean Journal of Chemical Engineering, January 2016, 33(1), 57-62(6), 10.1007/s11814-015-0037-7
downloadDownload PDF

Abstract

We have characterized micro-droplet generation using water immiscible hexafluorophosphate ([PF6])- and bis(trifluoromethylsulfonyl)imide ([Tf2N])-based room temperature ionic liquids (RTILs). The interfacial tension between total 7 RTILs and phosphate buffered saline (PBS) was measured using a tensiometer for the first time. PBS is one of the most commonly used buffer solutions in cell-related researches. The measured interfacial tension ranges from 8.51 to 11.62 and from 9.56 to 13.19 for [Tf2N]- and [PF6]-based RTILs, respectively. The RTILs micro-droplets were generated in a microfluidic device. The micro-droplet size and generation frequency were determined based on continuous monitoring of light transmittance at the interface in microchannel. The size of RTIL micro-droplets was inversely proportional to the increase of PBS solution flow rate and RTILs hydrophobicity, while droplet generation frequency was proportional to those changes. The measured size of RTILs droplets ranged from 0.6 to 10.5 nl, and from 1.0 to 17.1 nl for [Tf2N]- and [PF6]-based RTILs, respectively. The measured frequency of generated RTILs droplets ranged from 2.3 to 37.2 droplet/min, and from 2.7 to 17.1 droplet/min for [Tf2N]- and [PF6]-based RTILs, respectively. The capillary numbers were calculated depending on the RTILs, and ranged from 0.51×10.3 to 1.06×10.3 and from 5.00×10.3 to 8.65×10.3, for [Tf2N]- and [PF6]-based RTILs, respectively. The interfacial tension between RTILs and PBS will contribute to developing bioprocesses using immiscible RTILs. Also, the RTILs micro-droplets will enable the high-throughput monitoring of various biological and chemical reactions using RTILs as new reaction media.

References

Lee SH, Ha SH, Hiep NM, Chang WJ, Koo YM, J. Biotechnol., 133, 486 (2008)
Yassaghi G, Davoodnia A, Allameh S, Atefeh ZB, Niloofar TH, Bull. Korean Chem. Soc., 33, 2724 (2012)
Moon YH, Lee SM, Ha SH, Koo YM, Korean J. Chem. Eng., 23(2), 247 (2006)
Annapureddy HVR, Dang LX, J. Phys. Chem. B, 117(28), 8555 (2013)
Lee SH, Doan TTN, Ha SH, Chang WJ, Koo YM, J. Mol. Catal. B-Enzym., 47, 129 (2007)
Lee JK, Kim MJ, J. Org. Chem., 67, 6845 (2002)
Belder D, Angew. Chem.-Int. Edit., 44, 3521 (2005)
Krishna KS, Li Y, Li S, Kumar CSSR, Adv. Drug Deliv. Rev., 65, 1470 (2013)
Zhang Y, Bailey V, Puleo CM, Easwaran H, Griffiths E, Herman JG, Baylin SB, Wang TH, Lab Chip, 9, 1059 (2009)
Chen DLL, Li L, Reyes S, Adamson DN, Ismagilov RF, Langmuir, 23(4), 2255 (2007)
Nisisako T, Torii T, Higuchi T, Chem. Eng. J., 101(1-3), 23 (2004)
Aketagawa K, Hirama H, Torii T, J. Mater. Sci. Chem. Eng., 1, 1 (2013)
Song H, Ismagilov RF, J. Am. Chem. Soc., 125(47), 14613 (2003)
Sjostrom L, Joensson HN, Svahn HA, Lab Chip, 13, 1754 (2013)
Thorsen T, Roberts RW, Amold FH, Quake SR, Phys. Rev. Lett., 86, 4163 (2001)
Dreyfus R, Tabeling P, Willaime H, Phys. Rev. Lett., 90, 144505 (2003)
Zhao CX, Adv. Drug Deliv. Rev., 65, 1420 (2013)
Courtois F, Olguin LF, Whyte G, Bratton D, Huck WTS, Abell C, Hollfelder F, Chem. Biochem., 9, 439 (2008)
Cygan ZT, Cabral JT, Beers KL, Amis EJ, Langmuir, 21(8), 3629 (2005)
Lee J, Kim MJ, Lee HH, Langmuir, 22(5), 2090 (2006)
Chatterjee DD, Hetayothin B, Wheeler AR, King DJ, Garrell RL, Lab Chip, 6, 199 (2006)
de Mello AJ, Habgood M, Lancaster NL, Welton T, Wootton RCR, Lab Chip, 4, 417 (2004)
Dossi N, Toniolo R, Pizzariello A, Carrilho E, Piccin E, Battistion S, Bontempelli G, Lab Chip, 12, 153 (2012)
Hoshino T, Fujita K, Higashi A, Sakiyama K, Ohno H, Morishima K, Biochem. Biophys. Res. Commun., 427(2), 379 (2012)
Effenhauser CS, Bruln GJM, Paulus A, Ehrat M, Anal. Chem., 69, 3451 (1997)
Wilkes JS, in Ionic Liquids in Synthesis, Ed. Wasserscheid P, Welton T, WILEY-VCH Verlag & Co., KGaA, 1 (2002).
Oldham WJ, in Ionic Liquids: Industrial Applications to Green Chemistry, Ed. Rogers RD, Seddon KR, Oxford University, Press, 188 (2003).
Martino W, de la Mora JF, Yoshida Y, Saito G, Wilkes J, Green Chem., 8, 390 (2006)
Choi CH, Prasad N, Lee NR, Lee CS, Biochip J., 2, 27 (2008)
Fitchett BD, Rollins JB, Conboy JC, Langmuir, 21(26), 12179 (2005)
Lepercq-Bost E, Giorgi ML, Isambert A, Arnaud C, J. Membr. Sci., 314(1-2), 76 (2008)
van der Graaf S, Steegmans MLJ, van der Sman RGM, Schroen CGPH, Boom RM, Colloids Surf. A: Physicochem. Eng. Asp., 266, 106 (2005)

The Korean Institute of Chemical Engineers. F5, 119, Anam-ro, Seongbuk-gu, 233 Spring Street Seoul 02856, South Korea.
TEL. No. +82-2-458-3078FAX No. +82-507-804-0669E-mail : kiche@kiche.or.kr

Copyright (C) KICHE.all rights reserved.

- Korean Journal of Chemical Engineering 상단으로