Emulsification of particle loaded drops in simple shear flow

Merkel, Tobias; Henne, Julius; Hecht, Lena L.; Gräf, Volker; Walz, Elke; Schuchmann, Heike P.

doi:10.1016/j.colsurfa.2015.01.080

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…Therefore, particle-filled droplets are more difficult to break and larger average droplet sizes are expected in blends. This particle effect is already extensively studied in literature for concentrated polymer blends (Zou et al 2006;Gooneie et al 2016) and diluted oil in water emulsions (Merkel et al 2015). In addition, Kong et al (2011) observed a higher critical breakup Grace (1982) aspect ratio for single PA6 droplets containing silica nanoparticles which introduce viscoelastic effects in the dispersed phase.…”

Section: Droplet Breakupmentioning

confidence: 64%

“…Besides in polymer blends, droplets encapsulating particles are also of great importance in the oil, printing, and food industry (Smith and van de Ven 1985b;Desse et al 2009;Usta et al 2009;Bonnoit et al 2012;Mehrabian et al 2015;Merkel et al 2015). Consequently, several studies focus on the droplet dynamics of water/oil systems containing particles suspended in the dispersed phase.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics of sheared droplets filled with non-Brownian particles

2020

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The dynamics of single droplets containing non-Brownian particles are studied. The particle over droplet size ratio (r/R) is changed by using different particle sizes (r/R = 0.02–0.4). Additionally, the effect of particle concentration (5–20 vol%) is investigated. The dynamics of droplets with r/R = 0.02 show good agreement with the corresponding particle-free reference system which has a comparable viscosity ratio. Hence, this droplet phase can be considered as a homogenous medium characterized by its bulk viscosity which is governed by the particle concentration. However, droplets with r/R ≥ 0.1 show a more suppressed deformation and slower transient dynamics and, therefore, behave as a slightly more viscous medium than expected based on their bulk viscosity. These effects become more pronounced at higher particle concentrations and higher r/R. Moreover, local particle effects like asymmetric droplet shapes, oscillating droplet shapes, and tip streaming start to influence the droplet dynamics at particle concentrations around 15 vol%.

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Section: Droplet Breakupmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Dynamics of sheared droplets filled with non-Brownian particles

2020

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“…The mass fraction of particles was 48 wt % with respect to the disperse phase yielding a calculated coverage between 1.2 and 12 for drop sizes between 10 and 100 µm. The excess concentration was chosen not only to guarantee a jammed interface but also to account for a possible shearing‐off of particles from the interface during the emulsification process 27, 28.…”

Section: Methodsmentioning

confidence: 99%

Production of Particle‐Stabilized Nonspherical Emulsion Drops in Simple Shear Flow

et al. 2015

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Nonspherical drops are of interest in the formation of microcapsules in life sciences like food, pharmacy, and cosmetics, agro and fine chemicals as well as material sciences. Out of many systems, particle-stabilized emulsion drops, so-called Pickering emulsions, exhibit an interesting formulation. Systems with Pickering particles applied in an excess amount were investigated. During deformation, the particles fully covered the enlarged drop interfaces and prevented its relaxation to a spherical drop shape. Nonspherical drops could be produced in simple shear flow using an adequate process routine. The production in a simple device is a promising high-throughput alternative to microfluidic devices.

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Advances in Hydrodynamic Pressure Processing for Enhancing Emulsification and Dispersion

Schuchmann

2016

Innovative Food Processing Technologies

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Emulsification of particle loaded drops in simple shear flow

Cited by 8 publications

References 41 publications

Dynamics of sheared droplets filled with non-Brownian particles

Dynamics of sheared droplets filled with non-Brownian particles

Production of Particle‐Stabilized Nonspherical Emulsion Drops in Simple Shear Flow

Advances in Hydrodynamic Pressure Processing for Enhancing Emulsification and Dispersion

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