On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties

Cervantes Martinez, A.; Rio, E.; Delon, G.; Saint-Jalmes, A.; Langevin, D.; Binks, B. P.

doi:10.1039/b804177f

Quantitative prediction of the reduction of corrosion inhibitor effectiveness due to parasitic adsorption onto a competitor surface (2010)
Journal Article
Binks, B. P., Fletcher, P. D. I., Salama, I. E., Horsup, D. I., & Moore, J. A. (2011). Quantitative prediction of the reduction of corrosion inhibitor effectiveness due to parasitic adsorption onto a competitor surface. Langmuir : the ACS journal of surfaces and colloids, 27(1), 469-473. https://doi.org/10.1021/la103570e

We have investigated how the effectiveness of a corrosion inhibitor added to an aqueous solution to suppress the corrosion rate of steel is reduced by the addition of sand. The equilibrium adsorption isotherms of the inhibitor with respect to both th... Read More about Quantitative prediction of the reduction of corrosion inhibitor effectiveness due to parasitic adsorption onto a competitor surface.

Selective retardation of perfume oil evaporation from oil-in-water emulsions stabilized by either surfactant or nanoparticles (2010)
Journal Article
Binks, B. P., Fletcher, P. D., Holt, B. L., Beaussoubre, P., & Wong, K. (2010). Selective retardation of perfume oil evaporation from oil-in-water emulsions stabilized by either surfactant or nanoparticles. Langmuir : the ACS journal of surfaces and colloids, 26(23), 18024-18030. https://doi.org/10.1021/la103700g

We have used dynamic headspace analysis to investigate the evaporation rates of perfume oils from stirred oil-in-water emulsions into a flowing gas stream. We compare the behavior of an oil of low water solubility (limonene) and one of high water sol... Read More about Selective retardation of perfume oil evaporation from oil-in-water emulsions stabilized by either surfactant or nanoparticles.

Phase inversion of particle-stabilised perfume oil-water emulsions: experiment and theory (2010)
Journal Article
Binks, B. P., Fletcher, P. D. I., Holt, B. L., Beaussoubre, P., & Wong, K. (2010). Phase inversion of particle-stabilised perfume oil-water emulsions: experiment and theory. Physical chemistry chemical physics : PCCP, 12(38), 11954-11966. https://doi.org/10.1039/c0cp00558d

Phase inversion of fumed silica particle-stabilised emulsions of water and perfume oil can be effected in three ways. The transitional inversion from water-in-oil (w/o) to oil-in-water (o/w) occurs upon increasing the particle hydrophilicity for 9 oi... Read More about Phase inversion of particle-stabilised perfume oil-water emulsions: experiment and theory.

Aqueous Foams Stabilized by in Situ Surface Activation of CaCO3 Nanoparticles via Adsorption of Anionic Surfactant (2010)
Journal Article
Cui, Z., Cui, Y., Cui, C., Chen, Z., & Binks, B. P. (2010). Aqueous Foams Stabilized by in Situ Surface Activation of CaCO3 Nanoparticles via Adsorption of Anionic Surfactant. Langmuir : the ACS journal of surfaces and colloids, 26(15), 12567-12574. https://doi.org/10.1021/la1016559

The in situ surface activation of unmodified CaCO3 nanoparticles by interaction with surfactant in aqueous media has been studied, and the impact of this on the foamability and foam stability of aqueous dispersions was assessed. Using complementary e... Read More about Aqueous Foams Stabilized by in Situ Surface Activation of CaCO3 Nanoparticles via Adsorption of Anionic Surfactant.

Stabilisation of liquid-air surfaces by particles of low surface energy (2010)
Journal Article
Binks, B. P., & Rocher, A. (2010). Stabilisation of liquid-air surfaces by particles of low surface energy. Physical chemistry chemical physics : PCCP, 12(32), 9169-9171. https://doi.org/10.1039/c0cp00777c

We describe the stabilisation of liquid-air surfaces by micro-particles of a low surface energy solid. By varying the surface tension of the liquid, various particle-stabilised materials from oil dispersions to air-in-oil foams to dry water can be pr... Read More about Stabilisation of liquid-air surfaces by particles of low surface energy.

Influence of nanoparticle addition to Winsor surfactant microemulsion systems (2010)
Journal Article
Binks, B., Fletcher, P., & Tian, L. (2010). Influence of nanoparticle addition to Winsor surfactant microemulsion systems. Colloids and surfaces. A, Physicochemical and engineering aspects, 363(1-3), 8-15. https://doi.org/10.1016/j.colsurfa.2010.03.045

The influence of adding negatively charged silica nanoparticles to multiphase Winsor microemulsion systems of cationic surfactant/alcohol cosurfactant is reported. It is found that the particles do not change the salt-induced progression of Winsor sy... Read More about Influence of nanoparticle addition to Winsor surfactant microemulsion systems.

Non-aqueous foams in lubricating oil systems (2010)
Journal Article
Binks, B., Davies, C., Fletcher, P., & Sharp, E. (2010). Non-aqueous foams in lubricating oil systems. Colloids and surfaces. A, Physicochemical and engineering aspects, 360(1-3), 198-204. https://doi.org/10.1016/j.colsurfa.2010.02.028

We have investigated the foaming properties of mixtures of a hydrocarbon oil solvent with various low molar mass, polymeric and overbased detergent particle additives used in lubricating oils. Foam formation occurs only when the additive concentratio... Read More about Non-aqueous foams in lubricating oil systems.

Viscoelastic properties of silica nanoparticle monolayers at the air-water interface (2010)
Journal Article
Zang, D. Y., Rio, E., Langevin, D., Wei, B., & Binks, B. P. (2010). Viscoelastic properties of silica nanoparticle monolayers at the air-water interface. European Physical Journal E, 31(2), 125-134. https://doi.org/10.1140/epje/i2010-10565-7

We have investigated the rheological behaviour of silica nanoparticle layers at the air-water interface. Both compressed and deposited layers have been studied in Langmuir troughs and with a bicone rheometer. The compressed layers are more homogeneou... Read More about Viscoelastic properties of silica nanoparticle monolayers at the air-water interface.

Shearing particle monolayers: Strain-rate frequency superposition (2010)
Journal Article
Zang, D., Langevin, D., Binks, B. P., & Wei, B. (2010). Shearing particle monolayers: Strain-rate frequency superposition. Physical review. E, Statistical, nonlinear, and soft matter physics, 81(1), 011604. https://doi.org/10.1103/PhysRevE.81.011604

We report surface shear rheological measurements on monolayers of silica nanoparticles at the air-water interface. We have used the method of strain-rate frequency superposition (SRFS) to characterize the structural relaxation. We show that the rheol... Read More about Shearing particle monolayers: Strain-rate frequency superposition.

Effects of surfactant structure on the phase inversion of emulsions stabilized by mixtures of silica nanoparticles and cationic surfactant (2009)
Journal Article
Cui, Z. G., Yang, L. L., Cui, Y. Z., & Binks, B. P. (2010). Effects of surfactant structure on the phase inversion of emulsions stabilized by mixtures of silica nanoparticles and cationic surfactant. Langmuir : the ACS journal of surfaces and colloids, 26(7), 4717-4724. https://doi.org/10.1021/la903589e

Silica nanoparticles without any surface modification are not surface active at the toluene-water interface due to their extreme hydrophilicity but can be surface activated in situ by adsorbing cationic surfactant from water. This work investigates t... Read More about Effects of surfactant structure on the phase inversion of emulsions stabilized by mixtures of silica nanoparticles and cationic surfactant.

Inversion of 'dry water' to aqueous foam on addition of surfactant (2009)
Journal Article
Johnson, A. J., Rodrigues, J. A., & Binks, B. P. (2010). Inversion of 'dry water' to aqueous foam on addition of surfactant. Soft matter, 6(1), 126-135. https://doi.org/10.1039/b914706c

Addition of charged surfactant to mixtures of air, water and hydrophobic silica nanoparticles under high shear induces transitional phase inversion from a water-in-air powder to an air-in-water foam. Optical and electron microscopy reveal the non-sph... Read More about Inversion of 'dry water' to aqueous foam on addition of surfactant.

An ellipsometry study of silica nanoparticle layers at the water surface (2009)
Journal Article
Zang, D., Stocco, A., Langevin, D., Wei, B., & Binks, B. P. (2009). An ellipsometry study of silica nanoparticle layers at the water surface. Physical chemistry chemical physics : PCCP, 11(41), 9522-9529. https://doi.org/10.1039/b907903c

We have studied silica nanoparticle layers spread at the air/water interface. The surface pressure of the layers has been determined in a Langmuir trough via two orthogonal Wilhelmy plates. We observed significant differences in surface pressure acco... Read More about An ellipsometry study of silica nanoparticle layers at the water surface.

Influence of surfactant structure on the double inversion of emulsions in the presence of nanoparticles (2009)
Journal Article
Rodrigues, J. A., & Binks, B. P. (2009). Influence of surfactant structure on the double inversion of emulsions in the presence of nanoparticles. Colloids and surfaces. A, Physicochemical and engineering aspects, 345(1-3), 195-201. https://doi.org/10.1016/j.colsurfa.2009.05.001

The double inversion of emulsions from oil-in-water (o/w) to water-in-oil (w/o) and back to o/w is a novel approach developed using oppositely charged mixtures of solid particles and surfactant molecules [B.P. Binks, J.A. Rodrigues, Angew. Chem. Int.... Read More about Influence of surfactant structure on the double inversion of emulsions in the presence of nanoparticles.

Particle-stabilised foams: an interfacial study (2009)
Journal Article
Stocco, A., Drenckhan, W., Rio, E., Langevin, D., & Binks, B. P. (2009). Particle-stabilised foams: an interfacial study. Soft matter, 5(11), 2215-2222. https://doi.org/10.1039/b901180c

In an attempt to elucidate the remarkable stability of foams generated from dispersions of partially hydrophobic nanoparticles (fumed silica), we present investigations into the static and dilational properties of the gas-liquid interfaces of such di... Read More about Particle-stabilised foams: an interfacial study.

Effects of temperature on water-in-oil emulsions stabilised solely by wax microparticles (2009)
Journal Article
Binks, B. P., & Rocher, A. (2009). Effects of temperature on water-in-oil emulsions stabilised solely by wax microparticles. Journal of colloid and interface science, 335(1), 94-104. https://doi.org/10.1016/j.jcis.2009.03.089

The possibility of stabilising oil-water mixtures using wax particles alone is reported. As judged from contact angle measurements, wax particles are hydrophobic and act as effective emulsifiers of water-in-squalane emulsions. Specific differences ex... Read More about Effects of temperature on water-in-oil emulsions stabilised solely by wax microparticles.

A microfluidic approach to chemically driven assembly of colloidal particles at gas-liquid interfaces (2009)
Journal Article
Park, J. I., Nie, Z., Kumachev, A., Abdelrahman, A. I., Binks, B. P., Stone, H. A., & Kumacheva, E. (2009). A microfluidic approach to chemically driven assembly of colloidal particles at gas-liquid interfaces. Angewandte Chemie, 48(29), 5300-5304. https://doi.org/10.1002/anie.200805204

Bubbling up: Dissolution of CO 2 bubbles in a suspension of colloidal particles chemically induces the assembly of particles on the surface of shrunken bubbles, and thus yields rapid continuous formation of a colloidal armor. This approach maintains... Read More about A microfluidic approach to chemically driven assembly of colloidal particles at gas-liquid interfaces.

Origin of stabilisation of aqueous foams in nanoparticle-surfactant mixtures (2008)
Journal Article
Binks, B. P., Kirkland, M., & Rodrigues, J. A. (2008). Origin of stabilisation of aqueous foams in nanoparticle-surfactant mixtures. Soft matter, 4(12), 2373-2382. https://doi.org/10.1039/b811291f

Using a range of complementary experiments, a detailed investigation into the behaviour of air-in-water foams stabilised by a mixture of silica nanoparticles and pure cationic surfactant has been made. At high pH where particles are significantly neg... Read More about Origin of stabilisation of aqueous foams in nanoparticle-surfactant mixtures.

Influence of particle composition and thermal cycling on bijel formation (2008)
Journal Article
White, K. A., Schofield, A. B., Binks, B. P., & Clegg, P. S. (2008). Influence of particle composition and thermal cycling on bijel formation. Journal of Physics: Condensed Matter, 20(49), Article ARTN 494223. https://doi.org/10.1088/0953-8984/20/49/494223

Colloidal particles with appropriate wetting properties can become very strongly trapped at an interface between two immiscible fluids. We have harnessed this phenomenon to create a new class of soft materials with intriguing and potentially useful c... Read More about Influence of particle composition and thermal cycling on bijel formation.

Double phase inversion of emulsions stabilized by a mixture of CaCO3 nanoparticles and sodium dodecyl sulphate (2008)
Journal Article
Cui, Z. G., Shi, K. Z., Cui, Y. Z., & Binks, B. P. (2008). Double phase inversion of emulsions stabilized by a mixture of CaCO3 nanoparticles and sodium dodecyl sulphate. Colloids and surfaces. A, Physicochemical and engineering aspects, 329(1-2), 67-74. https://doi.org/10.1016/j.colsurfa.2008.06.049

The interaction between unmodified CaCO3 nanoparticles and sodium dodecyl sulphate (SDS) in aqueous solution and the subsequent emulsification of the mixed dispersions are studied by means of zeta potential measurements, adsorption and emulsion chara... Read More about Double phase inversion of emulsions stabilized by a mixture of CaCO3 nanoparticles and sodium dodecyl sulphate.

On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties (2008)
Journal Article
Cervantes Martinez, A., Rio, E., Delon, G., Saint-Jalmes, A., Langevin, D., & Binks, B. P. (2008). On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties. Soft matter, 4(7), 1531-1535. https://doi.org/10.1039/b804177f

We have performed a quantitative study of the coarsening of foams stabilised by partially hydrophobic silica nanoparticles. We have used a variety of techniques: optical and electron microscopy, microfluidics, and multiple light scattering. Using ear... Read More about On the origin of the remarkable stability of aqueous foams stabilised by nanoparticles: link with microscopic surface properties.

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