Volatile surfactants: Characterization and areas of application |
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| Institution: | 1. Chair of Colloid Chemistry, Faculty of Chemistry, Moscow State University, 119991, Moscow, 1-3 Leninskie Gory, Russia;2. German Textile Research Center Nord West (DTNW), Adlerstr. 1, Krefeld, 47798, Germany;3. Department of Chemical and Pharmaceutical Engineering (DCPE), Faculty of Chemistry and Pharmacy at the University of Sofia, James Bourchier Avenue 1, Sofia, 1164, Bulgaria;1. James L. Winkle College of Pharmacy, University of Cincinnati, 3255 Eden Avenue, Cincinnati, OH, 45267, USA;1. Department of Mathematics, National Institute of Technology Durgapur, Durgapur-713209, India;2. Université de Lorraine, CNRS, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360 CNRS-Université de Lorraine, Vandoeuvre-lès-Nancy F-54501, France;1. Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa, 3200003, Haifa, Israel;2. Russel Berrie Nanotechnology Institute, Technion – Israel Institute of Technology, Haifa, 3200003, Haifa, Israel;3. Wolfson Department of Chemical Engineering, Technion – Israel Institute of Technology, Haifa, 3200003, Haifa, Israel;4. The Nancy & Stephen Grand Technion Energy Program, Technion – Israel Institute of Technology, Haifa, 3200003, Haifa, Israel |
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| Abstract: | Amphiphilic aroma molecules, representatives of fragrance molecules, are introduced as dynamic volatile surfactants. Surface tension of their aqueous solutions proves to be a sensitive and revealing quantity, used for assessment of the adsorption-evaporation behavior both under equilibrium conditions and in regimes of no instantaneous equilibrium. Such volatile amphiphiles are characterized by fast adsorption from bulk solution at an air-water interface, on a timescale of tens of microseconds, and exhibit synergetic effect in mixtures with conventional micellar-forming surfactants. Their ability to evaporate from the interface on a time scale of minutes suggests their applications as “temporal” dynamic cosurfactants in technologies involving fast formation of new surfaces. Current challenges concern evaluation of specific material parameters of volatile aroma surfactants in order to enable their selection for targeted applications. |
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| Keywords: | Volatile surfactants Perfumes Dynamic surface tension Dynamic interfaces Evaporation model |
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