2006
DOI: 10.1016/j.jcis.2006.01.061
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Manufacture of large uniform droplets using rotating membrane emulsification

Abstract: A new rotating membrane emulsification system using a stainless steel membrane with 100 µm laser drilled pores was used to produce oil/water emulsions consisting of 2 wt. % Tween 20 as emulsifier, paraffin wax as dispersed oil phase and 0.01-0.25 wt. % Carbomer (Carbopol ETD 2050) as stabilizer. The membrane tube, 1 cm in diameter, was rotated inside a stationary glass cylinder, diameter of 3 cm, at a constant speed in the range 50-1500 rpm. The oil phase was introduced inside the membrane tube and permeated t… Show more

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Cited by 119 publications
(87 citation statements)
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“…Membrane emulsification is a "bottom-up" approach based 58 on injection of one liquid through a microporous membrane into another immiscible liquid 59 phase, leading to generation of uniform droplets [29]. Continuous membrane emulsification 60 systems enable large-scale production and can involve oscillatory (pulsed) flow of the 61 continuous phase [29,30] or nonstationary membrane, such as rotating [31] The MIP particles were synthesised through the following five steps:…”
mentioning
confidence: 99%
“…Membrane emulsification is a "bottom-up" approach based 58 on injection of one liquid through a microporous membrane into another immiscible liquid 59 phase, leading to generation of uniform droplets [29]. Continuous membrane emulsification 60 systems enable large-scale production and can involve oscillatory (pulsed) flow of the 61 continuous phase [29,30] or nonstationary membrane, such as rotating [31] The MIP particles were synthesised through the following five steps:…”
mentioning
confidence: 99%
“…Various membrane configurations have been investigated for direct ME including cross-flow systems (Vladisavljević and Schubert, 2003a), rotating stainless steel tube with laser drilled pores (Vladisavljević and Williams, 2006), vibrating microsieve membrane (Holdich et al 2010) and stirred cell with flat-disc membrane (Egidi et al 2008). ME enables production of emulsions over a wide range of mean droplet sizes from about 0.3 µm to several hundred µm with a width of the particle size distribution typically in the range of 0.3−0.6 as measured by relative span factor (Table A1) or above 10% in terms of coefficient of variation (CV).…”
mentioning
confidence: 99%
“…It is especially important in PME, where whole emulsion, rather than a pure dispersed phase, is pressed through the membrane. Typical microsieves used in ME are nickel microengineered membranes manufactured using UV-LIGA process (Nazir et al, 2011;Schadler and Windhab, 2006;Egidi et al, 2008), silicon nitride Aquamarijn microsieves fabricated by reactive ion etching (RIE) (van Rijn et al, 1997), stainless steel membranes fabricated by pulsed laser drilling (Dowding et al, 2001;Vladisavljević and Williams, 2006;Geerken et al, 2008) or end-milling , and microchannel arrays fabricated in single crystal silicon by Deep Reactive Ion Etching (DRIE) (Kobayashi et al, 2003) or in PMMA by X-ray lithography and wet etching (Kobayashi et al, 2008b). The fabrication of microengineered membranes for ME is described by Vladisavljević et al (2012).…”
Section: Microengineered Membranesmentioning
confidence: 99%
“…The surface shear can be decoupled from the cross flow by rotating or vibrating the membrane within a static continuous phase (Holdich et al, 2010;Zeng et al, 2013;Gomaa et al, 2014;Vladisavljević and Williams, 2006) or introducing forward and backward flow pulsations in cross flow . The advantages of pulsed cross flow over rotating or vibrating membrane are: (i) liquid pulsations require less energy than membrane oscillations or rotations because liquids are less dense than solids and have a lower inertia; (ii) the energy consumption to maintain pulsed flow is independent on membrane area, whereas energy input to maintain membrane vibrations or rotations is in proportion with membrane dimensions, and (iii) pulsed cross flow can be extended to a baffled reactor, connected in series to the membrane module, to achieve simultaneous drop generation and reaction in the produced emulsion .…”
Section: Emulsification Using Microengineered Membranesmentioning
confidence: 99%