Effect of hydrophobicity on tensile rheological properties of silica nanoparticle monolayers at the air–water interface

Zang, Duyang; Zhang, Y.J.; Hou, Qian

doi:10.1016/j.colsurfa.2011.12.047

Cited by 14 publications

(7 citation statements)

References 27 publications

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“…A probe with conical geometry immersed into the subphase through an interfacial adsorption layer compresses the interface in a manner similar to a Langmuir film balance, as shown recently by Zang et al 41 for partially hydrophobic silica nanoparticles. We use this approach here to emulate the compression history of shrinking oil drops in the interfacial shear rheometer and create interfaces with different DA/A 0 by using measuring cells with different radii.…”

Section: Interfacial Viscoelasticity: Shear and Compressionmentioning

confidence: 82%

Interfacial viscoelasticity controls buckling, wrinkling and arrest in emulsion drops undergoing mass transfer

et al. 2012

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Section: Interfacial Viscoelasticity: Shear and Compressionmentioning

confidence: 82%

Interfacial viscoelasticity controls buckling, wrinkling and arrest in emulsion drops undergoing mass transfer

et al. 2012

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“…8 Furthermore, in many of the aforementioned applications, the interface undergoes large deformations that produce compression and shear stresses; hence, an effective stabilization heavily depends on the flow behavior of the colloidal monolayers. 7,9,10 In fact, numerous studies have been conducted to link the rheological response of particle-laden interfaces to stability of emulsions and foams. 11−13 Therefore, it is imperative to advance our understanding of how the mechanical properties of an interface, i.e., the dilational/shear surface elasticity, are altered by attachment of particles.…”

Section: ■ Introductionmentioning

confidence: 99%

Collapse of Particle-Laden Interfaces under Compression: Buckling vs Particle Expulsion

Razavi

Cao²,

Lin³

et al. 2015

Langmuir

151

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Colloidal particles can bind to fluid interfaces with a capillary energy that is thousands of times the thermal energy. This phenomenon offers an effective route to emulsion and foam stabilization where the stability is influenced by the phase behavior of the particle-laden interface under deformation. Despite the vast interest in particle-laden interfaces, the key factors that determine the collapse of such an interface under compression have remained relatively unexplored. In this study, we illustrate the significance of the particle surface wettability and presence of electrolyte in the subphase on interparticle interactions at the interface and the resulting collapse mode. Various collapse mechanisms including buckling, particle expulsion, and multilayer formation are reported and interpreted in terms of particle-particle and particle-interface interactions.

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“…23,24 In addition, the particle hydrophobicity has a signicant inuence on the rheological properties of particle layers deposited at planar air-water surfaces. [25][26][27] Based on this knowledge, an obvious question is whether and how particle hydrophobicity inuences the properties of liquid marbles. Herein, we prepare liquid water marbles with fumed silica nanoparticles of various hydrophobicities.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle hydrophobicity on the properties of liquid water marbles

et al. 2013

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We study both the static properties and dynamic behavior of liquid water marbles coated with silica nanoparticles of varied hydrophobicity. The static properties are characterized by the variation of marble height and diameter with increasing marble volume, such that the effective surface tension g eff of the marble can be obtained. The dynamic behavior of liquid marbles includes their impingement on a solid surface and their compression between two parallel glass plates. Marbles coated with particles of intermediate hydrophobicity exhibit maximum g eff values and enhanced mechanical robustness. Due to particle detachment from or particle rearrangement at the air-water interface caused by the impact, the dynamic surface tensions g d of liquid water marbles are different in magnitude to those of g eff . In fact, g d plays an important role in determining the contact time and oscillation period during the impact and rebound processes. Our results show that both the static effective and dynamic surface tension depend on the hydrophobicity of the particles coating the marble surfaces.

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Effect of hydrophobicity on tensile rheological properties of silica nanoparticle monolayers at the air–water interface

Cited by 14 publications

References 27 publications

Interfacial viscoelasticity controls buckling, wrinkling and arrest in emulsion drops undergoing mass transfer

Interfacial viscoelasticity controls buckling, wrinkling and arrest in emulsion drops undergoing mass transfer

Collapse of Particle-Laden Interfaces under Compression: Buckling vs Particle Expulsion

Effect of particle hydrophobicity on the properties of liquid water marbles

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