Modification of interfacial characteristics of monodisperse droplets produced using membrane emulsification by surfactant displacement and/or polyelectrolyte electrostatic deposition

Vladisavljević, Goran T.; McClements, David Julian

doi:10.1016/j.colsurfa.2010.05.006

Cited by 22 publications

(15 citation statements)

References 40 publications

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“…The use of zwitterionic surfactants must also be avoided, even when they carry a net negative charge (Surh et al, 2008). To produce cationic droplets using SPG membrane, the membrane must be pre-treated with amino trialkoxysilanes to become positively charged (Figure 3b) or the charge of anionic droplets must be altered after ME by displacing anionic surfactants with cationic ones (Vladisavljević and McClements, 2010). …”

Section: Effect Of Surfactantmentioning

confidence: 99%

“…Membrane emulsification technology has since been extended to the production of multiple emulsions, such as solid-in-oil-in-water (S/O/W) (Kukizaki, 2009c), (Wei et al, 2013;Cho et al, 2005) and water-in-oil-in-water (W/O/W) (Surh et al, 2007), nano-and micro-emulsions (Koga et al, 2010;Oh et al, 2011;Laouini et al, 2012;Choi et al, 2012;Pradhan et al, 2013;Oh et al, 2013), multilayer emulsions (Vladisavljević and McClements, 2010;Gudipati et al, 2010;Nazir et al, 2012), microbubbles (Kukizaki and Goto, 2007), nanobubbles (Kukizaki and Goto, 2006), microand nano-particles (Vladisavljević and Williams, 2005;2010), and nanovesicles (liposomes and niosomes) (Hwang et al, 2011;Pham et al, 2012). The examples of particles fabricated by solidification of droplets produced using SPG membrane are given in Table 4.…”

Section: Integration Of Membrane Emulsification and Solid/semi-solid mentioning

confidence: 99%

“…Preparation of liquid-core-polymer-shell particles by membrane emulsification followed by emulsification on the surface of the droplets: (a) interfacial polycondensation (IP) (Chu et al, 2002) and (b) in-situ polymerisation (ISP) (Pan et al, 2012). emulsification: (a) Citrem-chitosan-alginate three-layer emulsion prepared by PME and LbL electrostatic deposition (Gudipati et al, 2010); (b) Tween 20-SDS-chitosan two-layer emulsion with cationic droplets prepared by PME, surfactant displacement and LbL electrostatic deposition (Vladisavljević and McClements, 2010); (c) BLG-alginate two-layer emulsion with anionic droplets prepared by PME and LbL electrostatic deposition with stepwise change in pH after mixing BLG-stabilized emulsion with alginate (Li and McClements, 2014). …”

Section: Pyrex Glass Wt%mentioning

confidence: 99%

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Structured microparticles with tailored properties produced by membrane emulsification

Vladisavljević

2015

Advances in Colloid and Interface Science

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This paper provides an overview of membrane emulsification routes for fabrication of structured microparticles with tailored properties for specific applications. Direct (bottom-up) and premix (top-down) membrane emulsification processes are discussed including operational, formulation and membrane factors that control the droplet size and droplet generation regimes. A special emphasis was put on different methods of controlled shear generation on membrane surface, such as cross flow on the membrane surface, swirl flow, forward and backward flow pulsations in the continuous phase and membrane oscillations and rotations. Droplets produced by membrane emulsification can be used for synthesis of particles with versatile morphology (solid and hollow, matrix and core/shell, spherical and non-spherical, porous and coherent, composite and homogeneous), which can be surface functionalised and coated or loaded with macromolecules, nanoparticles, quantum dots, drugs, phase change materials and high molecular weight gases to achieve controlled/targeted drug release and impart special optical, chemical, electrical, acoustic, thermal and magnetic properties. The template emulsions including metal-in-oil, solid-in-oil-in-water, oil-in-oil, multilayer, and Pickering emulsions can be produced with high encapsulation efficiency of encapsulated materials and narrow size distribution and transformed into structured particles using a variety of different processes, such as polymerisation (suspension, mini-emulsion, interfacial and in-situ), ionic gelation, chemical crosslinking, melt solidification, internal phase separation, layer-by-layer electrostatic deposition, particle self-assembly, complex coacervation, spray drying, sol-gel processing, and molecular imprinting. Particles fabricated from droplets produced by membrane emulsification include nanoclusters, colloidosomes, carbon aerogel particles, nanoshells, polymeric (molecularly imprinted, hypercrosslinked, Janus and core/shell) particles, solder metal powders and inorganic particles. Membrane 2 emulsification devices operate under constant temperature due to low shear rates on the membrane surface, which range from (1−10) × 10 3 s −1 in a direct process to (1−10) × 10 4 s −1 in a premix process.Keywords: Membrane Emulsification; Polymeric microsphere; Microgel; Janus Particle; Core/Shell Particle, Colloidosome. Membrane emulsificationMembrane emulsification (ME) involves preparation of emulsions by pressing a pure dispersed phase or pre-emulsified mixture of the dispersed and continuous phase through a microporous membrane under controlled injection rate and shear conditions. In direct membrane emulsification (DME), one liquid (a dispersed phase) is injected through a microporous membrane into another immiscible liquid (the continuous phase) (Nakashima et al., 1991;, which leads to the formation of droplets at the membrane/continuous phase interface ( Figure 1a). In premix membrane emulsification (PME) (Figure 1b), a pre-emulsion is pressed through the membrane (...

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Section: Effect Of Surfactantmentioning

confidence: 99%

Section: Integration Of Membrane Emulsification and Solid/semi-solid mentioning

confidence: 99%

Section: Pyrex Glass Wt%mentioning

confidence: 99%

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Structured microparticles with tailored properties produced by membrane emulsification

Vladisavljević

2015

Advances in Colloid and Interface Science

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“…For example, lecithin at pH 3 fouls SPG membrane due to electrostatic interactions between positively charged groups (-N(CH 3 ) 3 + and -NH 3 + ) on phospholipid molecules and negatively charged silanol groups on SPG surface, although at pH 3 the net charge on lecithin molecules is negative (Surh et al, 2008). To produce cationic droplets using SPG membrane, the membrane must be treated with amino trialkoxysilanes to induce a positive charge on the surface (Figure 7b) or the charge of anionic droplets can be altered after ME by surfactant displacement (Vladisavljević and McClements, 2010).…”

Section: Influence Of Surfactantmentioning

confidence: 99%

“…Since the early 1990s, applications of SPG membrane emulsification technique have been extended to the production of multiple emulsions, such as solid-in-oil-in-water (S/O/W) (Kukizaki, 2009c), oil-in-water-in-oil (O/W/O) (Wei et al, 2013;Cho et al, 2005) and waterin-oil-in-water (W/O/W) (Surh et al, 2007), nano-and micro-emulsions (Koga et al, 2010;Oh et al, 2011;Laouini et al, 2012;Choi et al, 2012;Pradhan et al, 2013;Oh et al, 2013), emulsions with droplets laminated with multilayered biopolymer films (Vladisavljević and McClements, 2010;Gudipati et al, 2010;Nazir et al, 2012), microbubbles (Kukizaki and Goto, 2007), nanobubbles (Kukizaki and Goto, 2006), micro-and nano-particles (Vladisavljević and Williams, 2005;, and vesicles (liposomes and niosomes) (Hwang et al, 2011;Pham et al, 2012).…”

Section: Applications Of Direct and Premix Membrane Emulsification Usmentioning

confidence: 99%

High-pressure Homogenizer Design

Rayner¹

2015

Engineering Aspects of Food Emulsification and Homogenization

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Membranes for Microfluidic Applications

Vladisavljević

Kobayashi

Nakajima

2013

Encyclopedia of Membrane Science and Technology

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This article provides an overview of major membrane microfluidic techniques for the production and modification of liquid‐liquid and gas‐liquid dispersions and the most common membranes used in these processes. The main emphasis is on Shirasu porous glass (SPG) membrane, microengineered membranes, and single‐crystal silicon microchannel (MC) plates. For each membrane type, fabrication process and microfluidic applications are discussed. SPG membrane is an interconnected‐type membrane fabricated by spinodal decomposition, which has been widely used in membrane emulsification (ME) and membrane micromixing/nanoprecipitation processes leading to the generation of emulsions, micro‐ and nanobubbles, and micro‐ and nanoparticles. Typical microengineered membranes used in microfluidic applications are silicon nitride microsieves fabricated by photolithography and reactive ion etching, nickel membranes fabricated by UV‐LIGA process, and stainless steel membranes with laser‐drilled pores. Microengineered membranes are used in stirred cell, cross‐flow, and pulsating cross‐flow ME systems. In order to prevent damage to shear‐sensitive materials in the product stream, a shear stress on the downstream side of the membrane can be provided using oscillating (vibrating) or spinning (rotating) membrane. MC plates are microchips with 3D architecture consisting of an array of horizontal microgrooves or vertical straight‐through channels integrating with other features such as terrace lines, steps, and cross‐flow channels. They are usually fabricated in single‐crystal silicon by photolithography and anisotropic wet etching or deep reactive ion etching.

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Modification of interfacial characteristics of monodisperse droplets produced using membrane emulsification by surfactant displacement and/or polyelectrolyte electrostatic deposition

Cited by 22 publications

References 40 publications

Structured microparticles with tailored properties produced by membrane emulsification

Structured microparticles with tailored properties produced by membrane emulsification

High-pressure Homogenizer Design

Membranes for Microfluidic Applications

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