Fluorosurfactants for microdroplets: interfacial tension analysis

Journal of Colloid and Interface Science
Daniel J HoltChris Abell

Abstract

Quantitative analysis of a number of potential fluorous surfactants, prepared with a view to stabilisation of microdroplets in microfluidic systems is presented. The surfactants tested comprised compounds with both perfluoropolyether (PFPE) and perfluoroalkyl (PFA) tails, along with three classes of hydrophilic head group, including crown ethers and hexaethylene gylcol. Surfactants were tested for activity using the pendant drop technique. Six compounds proved highly effective and efficient surfactants, with gamma(CMC)<10 mN/m and CMCs in the sub-millimolar range. These six compounds stabilised aqueous microdroplets in fluorous oils within poly(dimethylsiloxane) (PDMS) microdevices to a greater degree than commonly used pseudosurfactants such as perfluorooctanol.

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Citations

Feb 6, 2013·Lab on a Chip·Andrew C HatchAbraham P Lee
Dec 18, 2013·Journal of Nanoparticle Research : an Interdisciplinary Forum for Nanoscale Science and Technology·Ruijin Wang
May 4, 2011·Carbohydrate Research·Audrey FavrelleAntoine Debuigne
Nov 28, 2012·Angewandte Chemie·Haakan N Joensson, Helene Andersson Svahn
Oct 21, 2011·Lab on a Chip·Jean-Christophe Baret
Oct 9, 2014·The Analyst·Evgenia Yu Basova, Frantisek Foret
Apr 28, 2017·SLAS Technology·Amar S Basu
Feb 6, 2017·Lab on a Chip·Mingqiang LiKam W Leong
Mar 16, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Giuseppe ArrabitoFederica Caselli
Oct 20, 2018·ACS Applied Materials & Interfaces·Junjie ChiZhongze Gu

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