[en] The interplay between evaporation and liquid-liquid phase separation (demixing) in binary sessile drops of partially miscible liquids is investigated. To determine the onset of the demixing phenomenon, a simple model is developed, which predicts a considerable temperature reduction (∼20°C) in the mixture due to evaporative cooling. Temperature reduction alongside with the change of composition lead to demixing in the mixtures. The model explains why a mixture at room temperature is able to demix, whilst the demixing upper critical temperature is at 6.3 °C. Five stages of the process are identified and explained. For the cases studied here, once the demixing begins through nucleation, a growing fingering pattern is formed at the contact line. The length of the fingers and the final area of deposition increase with the initial concentration. Experimental tests were performed using a double telecentric setup.
Disciplines :
Ingénierie mécanique
Auteur, co-auteur :
Sadafi, Hosein
Rabani, Ramin ; Université de Liège - ULiège > In silico-Model-based therapeutics, Critical Care Basic Sc.
Dehaeck, Sam
Machrafi, Hatim ; Université de Liège - ULiège > In silico medecine-Thermodynamics of Irreversible Processes
Haut, Benoit
Dauby, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Colinet, Pierre
Langue du document :
Anglais
Titre :
Evaporation induced demixing in binary sessile drops
Date de publication/diffusion :
09 juin 2020
Titre du périodique :
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Koller, C.M., Ramm, J., Kolozsvári, S., Paulitsch, J., Mayrhofer, P.H., Role of droplets and iron on the phase formation of arc evaporated Al–Cr-oxide coatings. Surf. Coat. Technol. 276 (2015), 735–742.
Park, Jungho, Moon, Jooho, Control of colloidal particle deposit patterns within picoliter droplets ejected by ink-jet printing. Langmuir 22:8 (2006), 3506–3513.
Sobac, B., Larbi, Z., Colinet, P., Haut, B., Mathematical modeling of the drying of a spherical colloidal drop. Colloids Surf. A: Physicochem. Eng. Aspects, 2019.
Farid, Mohammed, A new approach to modelling of single droplet drying. Chem. Eng. Sci. 58:13 (2003), 2985–2993.
Debaste, F., Halloin, V., Bossart, L., Haut, B., A new modeling approach for the prediction of yeast drying rates in fluidized beds. J. Food Eng. 84:2 (2008), 335–347.
Wang, Weining, Lin, Jieyi, Schwartz, David C., Scanning force microscopy of DNA molecules elongated by convective fluid flow in an evaporating droplet. Biophys. J. 75:1 (1998), 513–520.
Sadafi, M.H., Jahn, I., Hooman, K., Cooling performance of solid containing water for spray assisted dry cooling towers. Energy Convers. Manag. 91 (2015), 158–167.
Sadafi, M.H., Ruiz, J., Lucas, M., Jahn, I., Hooman, K., Numerical and experimental study on a single cone saline water spray in a wind tunnel. Int. J. Therm. Sci. 120 (2017), 190–202.
Oppermann, A.K.L., Renssen, M., Schuch, A., Stieger, M., Scholten, E., Effect of gelation of inner dispersed phase on stability of (W1/O/W2) multiple emulsions. Food Hydrocolloids 48 (2015), 17–26.
Lodge, Timothy P., Maxwell, Amanda L., Lott, Joseph R., Schmidt, Peter W., McAllister, John W., Morozova, Svetlana, Bates, Frank S., Li, Yongfu, Sammler, Robert L., Gelation, phase separation, and fibril formation in aqueous hydroxypropylmethylcellulose solutions. Biomacromolecules 19:3 (2018), 816–824 PMID: 29489329.
Keddie, Joseph L., Jones, Richard A.L., Cory, Rachel A., Size-dependent depression of the glass transition temperature in polymer films. EPL (Europhys. Lett.), 27(1), 1994, 59.
Kremer, Friedrich, Tress, Martin, Mapesa, Emmanuel Urandu, Glassy dynamics and glass transition in nanometric layers and films: a silver lining on the horizon. J. Non-Crystall. Solids 407 (2015), 277–283 7th IDMRCS: Relaxation in Complex Systems.
Sadafi, M.H., Jahn, I., Stilgoe, A.B., Hooman, K., Theoretical and experimental studies on a solid containing water droplet. Int. J. Heat Mass Transfer 78 (2014), 25–33.
Sadafi, M.H., Jahn, I., Stilgoe, A.B., Hooman, K., A theoretical model with experimental verification for heat and mass transfer of saline water droplets. Int. J. Heat Mass Transfer 81 (2015), 1–9.
Atkins, Peter, et al. Physical Chemistry: Thermodynamics, Structure, and Change. 2014, Macmillan Higher Education.
Haas, Christopher K., Torkelson, John M., Two-dimensional coarsening and phase separation in thin polymer solution films. Phys. Rev. E 55 (1997 Mar), 3191–3201.
Jeon, Sungil, Karkhanechi, Hamed, Fang, Li-Feng, Cheng, Liang, Ono, Takahiro, Nakamura, Ryota, Matsuyama, Hideto, Novel preparation and fundamental characterization of polyamide 6 self-supporting hollow fiber membranes via thermally induced phase separation (tips). J. Membr. Sci. 546 (2018), 1–14.
Tan, Huanshu, Diddens, Christian, Lv, Pengyu, Kuerten, Johannes G.M., Zhang, Xuehua, Lohse, Detlef, Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating ouzo drop. Proc. Natl. Acad. Sci. 113:31 (2016), 8642–8647.
Tsoumpas, Yannis, Dehaeck, Sam, Rednikov, Alexey, Colinet, Pierre, Effect of Marangoni flows on the shape of thin sessile droplets evaporating into air. Langmuir 31:49 (2015), 13334–13340.
Keiser, Ludovic, Bense, Hadrien, Colinet, Pierre, Bico, J., Reyssat, Etienne, Marangoni bursting: evaporation-induced emulsification of binary mixtures on a liquid layer. Phys. Rev. Lett., 118(7), 2017, 74504.
Troian, S.M., Wu, X.L., Safran, S.A., Fingering instability in thin wetting films. Phys. Rev. Lett. 62 (1989 Mar), 1496–1499.
Cachile, M., Cazabat, A.M., Bardon, S., Valignat, M.P., Vandenbrouck, F., Spontaneous spreading of surfactant solutions on hydrophilic surfaces. Colloids Surf. A: Physicochem. Eng. Aspects 159:1 (1999), 47–56.
Cachile, M., Schneemilch, M., Hamraoui, A., Cazabat, A.M., Films driven by surface tension gradients. Adv. Colloid Interface Sci. 96:1 (2002), 59–74 A Collection of Papers in Honour of Nikolay Churaev on the Occasion of his 80th Birthday.
Rabani, Ramin, Machrafi, Hatim, Dauby, Pierre, Effect of including a gas layer on the gel formation process during the drying of a polymer solution. Eur. Phys. J. E, 40(10), 2017, 89.
Mikishev, Alexander B., Rednikov, Alexey Y., Colinet, Pierre, Impact of an insoluble surfactant on the thresholds of evaporative Bénard–Marangoni instability under air. Eur. Phys. J. E, 40(10), 2017, 90.
Rabani, Ramin, Machrafi, Hatim, Dauby, Pierre, Influence of composition dependent diffusion coefficient, viscosity and relaxation time on evaporative Rayleigh–Bénard–Marangoni instabilities induced by solvent evaporation in a polymer solution. Microgravity Sci. Technol., 2019 Aug.
Doumenc, F., Boeck, T., Guerrier, B., Rossi, M., Transient Rayleigh–Bénard–Marangoni convection due to evaporation: a linear non-normal stability analysis. J. Fluid Mech. 648 (2010), 521–539.
Zoumpouli, Garyfalia A., Yiantsios, Stergios G., Hydrodynamic effects on phase separation morphologies in evaporating thin films of polymer solutions. Phys. Fluids, 28(8), 2016, 82108.
Cummings, John, Lowengrub, John S., Sumpter, Bobby G., Wise, Steven M., Kumar, Rajeev, Modeling solvent evaporation during thin film formation in phase separating polymer mixtures. Soft Matter 14:10 (2018), 1833–1846.
Martínez, Rubén, Gonzalez, Juan Antonio, de la Fuente, Isaias Garcia, Cobos, Jose Carlos, Thermodynamic properties of n-alkoxyethanols + organic solvent mixtures. xiv. liquid–liquid equilibria of systems containing 2-(2-ethoxyethoxy) ethanol and selected alkanes. J. Chem. Eng. Data 45:6 (2000), 1036–1039.
Raoult, Francois-Marie, Loi générale des tensions de vapeur des dissolvants. CR Hebd, Seances Acad. Sci. 104 (1887), 1430–1433.
Toussaint, Guillaume, Bodiguel, Hugues, Doumenc, Frédéric, Guerrier, Béatrice, Allain, Catherine, Experimental characterization of buoyancy-and surface tension-driven convection during the drying of a polymer solution. Int. J. Heat Mass Transfer 51:17–18 (2008), 4228–4237.
Canny, John, A computational approach to edge detection. IEEE Trans. Pattern Anal. Mach. Intell.(6), 1986, 679–698.
Colinet, Pierre, Legros, Jean Claude, Velarde, Manuel G., Nonlinear Dynamics of Surface-Tension-Driven Instabilities. 2001, Wiley-vch.
Talbot, Pauline, Sobac, Benjamin, Rednikov, Alexei, Colinet, Pierre, Haut, Benoît, Thermal transients during the evaporation of a spherical liquid drop. Int. J. Heat Mass Transfer, 97, 2016 803-517.
Dortmund Data Bank, 2020, www.ddbst.com.
Schaefer, C., van der Schoot, P., Michels, J.J., Structuring of polymer solutions upon solvent evaporation. Phys. Rev. E, 91(2), 2015, 22602.
