Layering, dewetting, and first-order wetting in ternary amphiphilic systems

Gompper, G.; Hennes, M.
February 1995
Journal of Chemical Physics;2/15/1995, Vol. 102 Issue 7, p2871
Academic Journal
A Ginzburg–Landau theory with a single scalar order parameter is used to study the wetting behavior in ternary mixtures of oil, water, and amphiphile. In particular, interfacial tensions and the contact angle of the middle phase between oil-rich and water-rich phases are examined, when the system approaches a Lifshitz critical point or an ordinary critical point. We find a variety of unexpected phenomena near these points, such as layering transitions and an extremely nonmonotonic behavior of the contact angle. Our results can be understood with the help of an effective interface potential for the oil/water interface, which we calculate exactly as a function of the width l of the middle phase. © 1995 American Institute of Physics.


Related Articles

  • Wetting properties of simple binary mixtures and systems with one self-associating component. Pérez, C.; Roquero, P.; Talanquer, V. // Journal of Chemical Physics;4/15/1994, Vol. 100 Issue 8, p5913 

    The presence of additional chemical equilibria in an otherwise simple system can induce unexpected phase behavior. We analyze the effect of this phenomenon on the wetting properties of binary mixtures with one self-associating component. As a first step we characterize the global wetting phase...

  • Wetting transitions at the air–liquid interface of water+tetradecane+C[sub 6]E[sub 2] mixtures. Yeh, Ming-Chih; Chen, Li-Jen // Journal of Chemical Physics;11/8/2001, Vol. 115 Issue 18, p8575 

    In this study, the interfacial phenomena and the wetting behaviors of the ternary system water+tetradecane+diethylene glycol monohexyl ether (C[sub 6]E[sub 2]) were carefully examined at 20 °C. There is one three-liquid-phase-coexisting tie triangle and three two-liquid-phase-coexisting...

  • Wetting in mixtures of water, nonionic amphiphiles, and nonpolar solvents. Kahlweit, M.; Busse, G. // Journal of Chemical Physics;7/15/1989, Vol. 91 Issue 2, p1339 

    As is well known, medium- and long-chain alkanes do not spread across H2O–air interfaces, but shape a lens. In this paper it is shown that the same holds for the upper amphiphile-rich phase in binary H2O–amphiphile mixtures with medium- and long-chain nonionic amphiphiles that show...

  • Density functional approach on wetting behavior of binary associating mixtures. Yeh, Ming-Chih; Chen, Li-Jen // Journal of Chemical Physics;5/8/2003, Vol. 118 Issue 18, p8331 

    A density functional theory is applied to study wetting behaviors of binary associating mixtures, which are described by the statistical associating fluid theory of Wertheim. When the associating interaction is strong, the phase behavior of the binary associating mixture falls into the type-VI...

  • A search for the wetting transition in 2,6-dimethyl pyridine/water mixtures in contact with glass near the lower critical point. Kreuser, H.; Woermann, D. // Journal of Chemical Physics;11/15/1992, Vol. 97 Issue 10, p7757 

    The pendant drop method and the capillary rise method are used to measure the interfacial tension σ of 2,6-dimethyl pyridine(2,6-lutidine)/water mixtures near the lower critical point. It is found that at temperatures 0.2 K≤(T-Tc)≤1.5 K the temperature dependence of σ is...

  • Wetting and layering in critical binary fluid mixtures. Bonn, D.; Kellay, H.; Wegdam, G. H. // Journal of Chemical Physics;11/1/1993, Vol. 99 Issue 9, p7115 

    We present an ellipsometric study of wetting and adsorption at the liquid–vapor interface of cyclohexane–methanol and cyclohexane–deuterated methanol systems. Due to the first-order character of the wetting transition and the hysteresis associated with it, either a very thin...

  • More insight into critical wetting in polymer blends. Jerry, Rocco A.; Nauman, E. Bruce // Journal of Chemical Physics;11/15/1992, Vol. 97 Issue 10, p7829 

    We have shown that a free energy expression that contains a derivative-dependent boundary penalty term, as introduced by Cohen and Muthukumar [J. Chem. Phys. 90, 5749 (1989)], will extend the region of parameter space over which critical wetting should occur.

  • Pyrolytic carbons derived from water soluble polymers. Molenda, M.; Chojnacka, A.; Natkański, P.; Podstawka-Proniewicz, E.; Kuśtrowski, P.; Dziembaj, R. // Journal of Thermal Analysis & Calorimetry;Jul2013, Vol. 113 Issue 1, p329 

    Conductive pyrolytic carbon materials were obtained in wet impregnation process followed by controlled pyrolysis. Poly- N-vinylformamide (PNVF) as well as mixture of PNVF and pyromellitic acid (PMA) were applied as carbon precursors. Composition of carbon precursors was optimized in terms to...

  • The effect of wetting of powder mixture on the preparation of hydrophilic matrix granules with high-shear granulator. Bajdik, János; Baki, Gabriella; Kelemen, András; Pintye-Hódi, Klara // Chemical Engineering Research & Design: Transactions of the Inst;Jan2008, Vol. 86 Issue 1, p1 

    The aim of our work was to determine the main factors which can influence the preparation of matrices and to choose the best parameters for the production of inert matrix granules with a high-shear granulator. Matrices were formulated, which contained hydroxypropyl methylcellulose (HPMC) as a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics