Synergistic effect of silica nanoparticle and cetyltrimethyl ammonium bromide on the stabilization of O/W emulsions

Liu, Qiang; Yang, Fei; Zhang, Shuiyan; Liu, Shangying; Xu, Jiarui; D, Sun

doi:10.1016/j.colsurfa.2007.02.010

Cited by 188 publications

(134 citation statements)

References 44 publications

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“…By studying particle stability, zeta potential, contact angles and emulsion lifetimes it has been shown that the cationic surfactants adsorb in a conformation where the charged head-group neutralizes a charged site on the particle surface and the hydrocarbon tail is exposed making the surface increasingly hydrophobic [17]. At higher surfactant concentrations various new effects emerge including destabilization of the emulsion [19] and double emulsion inversion [20]. Here we will reiterate our route to creating bijels.…”

Section: Introductionmentioning

confidence: 99%

Influence of particle composition and thermal cycling on bijel formation

White¹,

Schofield²,

Binks³

et al. 2008

J. Phys.: Condens. Matter

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Abstract. 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 characteristics. The material is known as a bijel: bicontinuous interfacially-jammed emulsion gel. It is a colloid-stabilized emulsion with fluid-bicontinuous domains. The potential to create these gels was first predicted using computer simulations. Experimentally we use mixtures of water and 2,6-lutidine at the composition for which the system undergoes a critical demixing transition on warming. Colloidal silica, with appropriate surface chemistry, is dispersed while the system is in the single-fluid phase; the composite sample is then slowly warmed well beyond the critical temperature. The liquids phase separate via spinodal decomposition and the particles become swept up on the newly created interfaces. As the domains coarsen the interfacial area decreases and the particles eventually become jammed together. The resulting structures have a significant yield stress and are stable for many months. Here we begin to explore the complex wetting properties of fluorescently-tagged silica surfaces in water-lutidine mixtures, showing how they can be tuned to allow bijel creation. Additionally we demonstrate how the particle properties change with time while they are immersed in the solvents.

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Section: Introductionmentioning

confidence: 99%

Influence of particle composition and thermal cycling on bijel formation

White¹,

Schofield²,

Binks³

et al. 2008

J. Phys.: Condens. Matter

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show abstract

“…In addition to promoting the stability of emulsions, mixed emulsifi ers and emulsifying waxes have the further advantages of improving emulsifi cation by stabilising the oil droplets during formation and by controlling the rheological properties of the emulsion (Eccleston 1997b ). Another example is the simultaneous inclusion of surfactants and solid particles that could yield synergistic stabilisation of the emulsion against coalescence and creaming (Binks and Whitby 2005 ;Lan et al 2007 ).…”

Section: Emulsifi Ersmentioning

confidence: 97%

The Effects of Emulsifiers and Emulsion Formulation Types on Dermal and Transdermal Drug Delivery

Otto

Plessis

2015

Percutaneous Penetration Enhancers Chemical Methods in Penetration Enhancement

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“…In liquid-phase processes, e.g., precipitation methods, primary particles easily interact each other and agglomerate. Although pH control or surfactant addition is usually used to obtain stable and dispersed NPs (Hwang et al, 2008;Lan et al, 2007), such methods also involve drying at high temperature, which usually causes agglomeration. In gas-phase processes, NP agglomerates and aggregates are easily formed because the high temperature causes sintering.…”

Section: Importance Of Np Dispersionmentioning

confidence: 99%

Recent Progress in Nanoparticle Dispersion Using Bead Mill

Ogi¹,

Zulhijah²,

Iwaki³

et al. 2017

KONA

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There is great demand for nanoparticles (NPs) dispersed in liquid phases for practical applications of functional NP materials. However, it is difficult to produce NP dispersions with specific particle sizes, concentrations, viscosities, and purities on an industrial scale (large mass production rate and low energy consumption). In this review, we highlight recent developments in NP dispersion using low-energy bead mill. Such processes enable the use of small beads (7-50 μm). Smaller beads reduce the collision and shear energies of NPs during agitation. This minimizes NP breakage/damage, and retains the shape and crystallinity of the NPs, which determine the inherent NP functions. This review starts with a brief explanation of the theory and current status of NP dispersion and describes the mechanism and experimental results for low-energy bead mill processes, i.e., using uniaxial, dualaxial, and all-separator bead mills, and selection of dispersing agent. Applications of NP dispersions, including nanocomposite materials, and methods for dealing with NP dispersion coloration are also discussed, along with future research directions.

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Synergistic effect of silica nanoparticle and cetyltrimethyl ammonium bromide on the stabilization of O/W emulsions

Cited by 188 publications

References 44 publications

Influence of particle composition and thermal cycling on bijel formation

Influence of particle composition and thermal cycling on bijel formation

The Effects of Emulsifiers and Emulsion Formulation Types on Dermal and Transdermal Drug Delivery

Recent Progress in Nanoparticle Dispersion Using Bead Mill

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