emulsion

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emulsion

 [e-mul´shun]
a mixture of two immiscible liquids, one being dispersed throughout the other in small droplets; a colloid system in which both the dispersed phase and the dispersion medium are liquids. Margarine, cold cream, and various medicated ointments are emulsions. In some emulsions the suspended particles tend to join together and settle out; hence the container must be shaken each time the emulsion is used.
film emulsion a dehydrated gel emulsion of light- or radiation-sensitive silver halide that is applied to a suitable base.

e·mul·sion

(ē-mŭl'shŭn),
A system containing two immiscible liquids in which one is dispersed, in the form of small globules (internal phase), throughout the other (external phase) (for example, oil in water [milk] or water in oil [mayonnaise]).
[Mod. L. fr. e-mulgeo, pp. -mulsus, to milk or drain out]

emulsion

Pharmacology A suspension of droplets of one liquid in another–eg, oil, water. See Emulsifier.

e·mul·sion

(ē-mŭl'shŭn)
A system containing two immiscible liquids in which one is dispersed, in the form of very small globules (internal phase), throughout the other (external phase).
[Mod. L. fr. e-mulgeo, pp. -mulsus, to milk or drain out]

e·mul·sion

(ē-mŭl'shŭn)
A system containing two immiscible liquids in which one is dispersed, in the form of small globules, throughout the other.
[Mod. L. fr. e-mulgeo, pp. -mulsus, to milk or drain out]
References in periodicals archive ?
Meanwhile, a mixture of [H.sub.2]O and [D.sub.2]O with the volume ratio of 34:100 was used as the inner fluid (W,) to match the density with oil phase under room temperature, and then to ensure the sphericity and the nonconcentricity of double emulsion droplets.
The PCL-chitosan nanoparticles produced by w/o/w double emulsion showed an entrapment efficiency of 99.04 [+ or -] 0.001%, therefore demonstrating being a good method for hydrophilic drug encapsulation.
Polymeric encapsulation of hydrophilic drugs such as proteins and peptides is generally prepared by double emulsion technique as this technique provides a better encapsulation efficiency over single emulsion technique [7,10].
Previous and current investigations of the role of surfactants in preparation of double emulsions give some explanation concerning the mechanisms of instability, thus providing ways of controlling its occurrence.
To overcome the shortages of both silica xerogel and biopolymer as drug carriers, drug loaded silica xerogel core-polymer shell composite nanoparticles for drug delivery have been fabricated in our previous work by developing a novel gelation-emulsion method with integration of both double emulsion and sol-gel techniques [12].
The double emulsion droplets will tend to coalesce and form larger droplets if the stirring in the curing the step is lower than in the dispersion step.
It was reported that in the early stage of the double-emulsion formation process, many droplets with different diameters were created, and usually several small W1 droplets were encapsulated in one particle [27], In the primary emulsion and double-emulsion formation processes of the modified double emulsion method, many droplets with different sizes were obtained in this study (Fig.
This water-in-oil emulsion is then dispersed in an aqueous phase containing protective colloids [poly (vinyl alcohol) (PVA) and hydroxyl ethyl cellulose (HEC)1, and a final water-in-oil-in-water double emulsion is obtained.
However, in the center region the double emulsion morphology which exists only at the low screw speed (40 rpm) also appears (Fig.
The preparation of PLGA CA using a double emulsion process has been optimized within our laboratory (14) for future use in both ultrasound triggered drug delivery and tumor targeting.