One-step microfluidic production of gas-in-water-in-oil multi-cores double emulsions

Wang, Wenting; Chen, Ran; Xu, Jianhong; Wang, Yundong; Luo, Guangsheng

doi:10.1016/j.cej.2014.11.030

Cited by 24 publications

(11 citation statements)

References 30 publications

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“…These materials include but not limited to liquid crystals 21–23 and lecithin 24 ; synthesized graphene oxide-polystyrene 25 ; glycerol to produce polyols-in-oil-in-water 26 ; natural glycyrrhizic nanofibrils assembling into a fibrillary hydrogel network to produce gelled MEs 20 ; bioactive materials dispersed in glycerol with the components of glycerol and organogel matrix of sitosterol-oryzanol in sunflower oil gels to produce oleogel capsules 27 ; graphene micro-aerogels embedded within soft MEs for electrochemical sensing 28 ; mix of oil, toluene, water and microparticles of poly benzyl methacrylate to produce porous polystyrene monoliths MEs 29 ; short-chain fatty acid within dietary fibers MEs 30 ; bacterial celluloses encapsulated within protein and polyglycerol polyricinoleate MEs 31 ; and eucalyptus oil, ubiquinone and fine water interfacing with hydroxy methyl cellulose and tannic acid to produce soft microcapsules of MEs 32 . Also, several emulsifiers 33 , silica nanoparticles 34–37 , colloidal materials 8,38,39 , pH stimuli-responsive polymers 40,41 , biomacromolecules 42 , surfactants 43,44 and physical parameters 45,46 have been incorporated to improve the MEs stability and performance 8,39,47–49 .…”

Section: Introductionmentioning

confidence: 99%

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Rapid and Highly Controlled Generation of Monodisperse Multiple Emulsions via a One-Step Hybrid Microfluidic Device

Azarmanesh

Bawazeer

Mohamad

et al. 2019

Sci Rep

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Multiple Emulsions (MEs) contain a drop laden with many micro-droplets. A single-step microfluidic-based synthesis process of MEs is presented to provide a rapid and controlled generation of monodisperse MEs. The design relies on the interaction of three immiscible fluids with each other in subsequent droplet formation steps to generate monodisperse ME constructs. The design is within a microchannel consists of two compartments of cross-junction and T-junction. The high shear stress at the cross-junction creates a stagnation point that splits the first immiscible phase to four jet streams each of which are sprayed to micrometer droplets surrounded by the second phase. The resulted structure is then supported by the third phase at the T-junction to generate and transport MEs. The ME formation within microfluidics is numerically simulated and the effects of several key parameters on properties of MEs are investigated. The dimensionless modeling of ME formation enables to change only one parameter at the time and analyze the sensitivity of the system to each parameter. The results demonstrate the capability of highly controlled and high-throughput MEs formation in a one-step synthesis process. The consecutive MEs are monodisperse in size which open avenues for the generation of controlled MEs for different applications.

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Section: Introductionmentioning

confidence: 99%

“…Recently, instead of exerting shear stress using blenders or stirrers, microfluidic technology has been employed to control shear stress and produce small droplets encompassed by a Sheath (Fig. 1c) 4,47,52,53 . The shear stress is adjustable and controllable, in contrary to the conventional methods of MEs formation.…”

Section: Introductionmentioning

confidence: 99%

Rapid and Highly Controlled Generation of Monodisperse Multiple Emulsions via a One-Step Hybrid Microfluidic Device

Azarmanesh

Bawazeer

Mohamad

et al. 2019

Sci Rep

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show abstract

“…By controlling the geometry of the device and/or controlling the flow rates of the three fluid phases, compound bubbles of a wide range of dimension, composition and morphology can be produced. [26][27][28][29] These compound bubbles have been used to produce nanoparticle-shelled bubbles for lightweight composites and polymer-shelled bubbles for acoustic applications. 4,[30][31][32][33] Despite these advances, potential adoption of these technologies in practical applications is hampered by low production rates associated microfluidics.…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Large-Scale Production of Compound Bubbles Using Parallelized Microfluidics for Efficient Extraction of Metal Ions

et al. 2019

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“…With the template of hollow or porous microspheres, hollow droplets can be controlled to encapsulate one or more microbubbles. The following empirical formulas fitted by experimental data can better predict the size of bubbles and droplets

\frac{D_{normalb}}{d_{normali}} = 4.61 C a^{- 0.10} {(\frac{Q_{i}}{Q_{m}})}^{0.07}

\frac{D_{normald}}{d_{normalm}} = 16.27 C a^{- 0.10} {(\frac{Q_{i} + Q_{m}}{Q_{o}})}^{0.33}

where D b and D d are diameters (mm) of bubbles and droplets, d i and d m are diameters (mm) of the orifice of inner and middle phase capillary, Q i , Q m , Q o are flow rate of inner, middle, and outer phase fluid.…”

Section: Gas/liquid/liquid (G/l/l) Multiphase Emulsionsmentioning

confidence: 99%

Multiphase Microfluidics: Fundamentals, Fabrication, and Functions

Geng

Ling

Huang

et al. 2020

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microfluidic system with multiphase flow to intensify heterogeneous reactions, pre pare multiphase emulsions, and fabricate anisotropic functional materials.In a word, with its great advances in last several decades, multiphase flows in microfluidic system have shown numerous advantages, like fastening heat and mass transfer, reducing energy con sumption, improving productivity and purity, etc. Fortunately, because of the recent development and commercialization of micromachining technologies, microflu idic chips gradually moved from laboratory stage to practical application stage. There are also several comprehensive and accu rate Reviews that summarize the research on structural design, [9] system regulation, [10] and applications [11] of microfluidic technology. However, fewer articles focused on the latest technologies and achievements in the field of the multiphase flow control and its applications. In this Review, we aim to give a preliminary guidance for researchers with dif ferent backgrounds on the formation mechanisms, fabrication methods, and potential applications of multiphase microfluidics within different systems. We firstly presented the evolution of microfluidic device manufacture, followed by the mechanism and regulation methods of multiphase flow in microfluidic devices. Then the application of both single and double multi phase emulsions in industrial process optimization and new material preparation were described in details. By comparing the mechanism of manufacturing single droplets, microbub bles, liquid-liquid-liquid emulsions, and gas-liquid-liquid emulsions from various perspectives, researchers could obtain their first glance in the overall field of multiphase microfluidics and choose the system of manufacturing particles or materials with specific function that is most suitable for their application. At the end, we also introduced some lastly emerging tech nologies, such as microelectromechanical systems (MEMS) and machine deep learning, combined with microfluidic tech nology, illustrating the huge potential for diverse applications of the latter. Development of Microfluidic DevicesThe recent progress in micromachining has broadened the selec tion of manufacturing technologies and materials for researchers and engineers to design complex and delicate microstructure that generates and manipulates multiphase flow. Generally, the most common fabrication methods of microfluidic devices can be Multiphase microfluidics enables an alternative approach with many possibilities in studying, analyzing, and manufacturing functional materials due to its numerous benefits over macroscale methods, such as its ultimate controllability, stability, heat and mass transfer capacity, etc. In addition to its immense potential in biomedical applications, multiphase microfluidics also offers new opportunities in various industrial practices including extraction, catalysis loading, and fabrication of ultralight materials. Herein, aiming to give preliminary guidance for researchers from different backgrounds, ...

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One-step microfluidic production of gas-in-water-in-oil multi-cores double emulsions

Cited by 24 publications

References 30 publications

Rapid and Highly Controlled Generation of Monodisperse Multiple Emulsions via a One-Step Hybrid Microfluidic Device

Rapid and Highly Controlled Generation of Monodisperse Multiple Emulsions via a One-Step Hybrid Microfluidic Device

Large-Scale Production of Compound Bubbles Using Parallelized Microfluidics for Efficient Extraction of Metal Ions

Multiphase Microfluidics: Fundamentals, Fabrication, and Functions

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