Monodisperse Double Emulsions Generated from a Microcapillary Device

Abstract

Double emulsions are highly structured fluids consisting of emulsion drops that contain smaller droplets inside. Although double emulsions are potentially of commercial value, traditional fabrication by means of two emulsification steps leads to very ill-controlled structuring. Using a microcapillary device, we fabricated double emulsions that contained a single internal droplet in a core-shell geometry. We show that the droplet size can be quantitatively predicted from the flow profiles of the fluids. The double emulsions were used to generate encapsulation structures by manipulating the properties of the fluid that makes up the shell. The high degree of control afforded by this method and the completely separate fluid streams make this a flexible and promising technique.

Technological, physico-chemical and sensory properties of raw and cooked meat batter incorporated with various levels of cold milled flaxseed powder

“…Emulsions play critical roles in many forms of processing in food industry such as dairy products, beverage, sauce, soup, and butter (Utada et al 2005;Guzey et al 2004). Oil dispersions in the form of small spherical droplets are stabilized in aqueous phase by protein in an oil-in-water (O/W) emulsion.…”

Fabrication, Assembly, and Application of Patchy Particles

“…A possible approach to particles with at least two patches would be the use of double emulsions. [84] In these emulsions, the inner emulsion droplets are enclosed inside an outer droplet that is surrounded by a continuous phase. If the outer-layer liquid contained particles with a diameter equivalent or larger than the thickness of the outer liquid layer, the particles could protrude into both the inner droplet phase and the continuous phase opening a facile route to two-pole patchy particles.…”

Manufacture of chitosan microbeads using centrifugally driven flow of gel-forming solutions through a polymeric micronozzle

“…Over the past decade microengineering techniques for the production of hydrogel microbeads have been developed, such as micromolding [12], photolithography [13], microfluidic routes [14][15][16], microchannel emulsification [17] and membrane emulsification [18][19]. These processes are illustrated schematically in Figure 1 and listed in Table 1 along with the examples of the beads fabricated.…”