Vapour pressure of some fragrance ingredients in emulsion and microemulsion formulations

FRIBERG, S.E.

doi:10.1046/j.1467-2494.1997.171702.x

Cited by 12 publications

(8 citation statements)

References 11 publications

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“…Up to now, we have seen that different intermolecular interaction between the fragrance compounds and the surfactant results in different phase behaviors, and different patterns during evaporation of the fragrance emulsion as well. The relation between the vapour pressure of the fragrance compounds and the amphiphilic association structures where these compounds are located has been well established [18,29,30]. The evaporation paths from the initial fragrance emulsions containing 80 wt.% water, 15 wt.% fragrance, and 5 wt.% surfactant are calculated according to the method mentioned above, and are shown in Fig.…”

Section: -5463 # 2000mentioning

confidence: 99%

Change of amphiphilic association structures during evaporation from emulsions in surfactant–fragrance–water systems

Zhang

Friberg

Aikens

2000

Intern J of Cosmetic Sci

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The phase diagrams of a nonionic surfactant (Laureth 4), water, and three different fragrance compounds, limonene, phenethyl alcohol and benzaldehyde, were compared. The location of the fragrance molecules in the lamellar liquid crystals (LLC) was investigated using the small-angle X-ray diffraction. The evaporation processes of the fragrance emulsions, consisting of 80 wt.% water, 15 wt.% fragrance and 5 wt.% surfactant, were followed both experimentally through an optical microscope, and theoretically through calculation based on the knowledge of the vapour pressure of the fragrance along the demixing line of the water-in-oil microemulsion (L(2)) phase boundary. Evaporation of the phenethyl alcohol emulsion led the system directly into the L(2) phase region, with very little phenethyl alcohol evaporated in 20 min. For the limonene system, during evaporation the system experienced several multi-phase regions, then reached the water-surfactant axis, and finally went into the L(2) phase region. By contrast to phenethyl alcohol, limonene evaporated completely within 10 min. Benzaldehyde emulsion went through structural changes similar to those of limonene, while the fragrance evaporated continuously until completion in 20 min.

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Section: -5463 # 2000mentioning

confidence: 99%

Change of amphiphilic association structures during evaporation from emulsions in surfactant–fragrance–water systems

Zhang

Friberg

Aikens

2000

Intern J of Cosmetic Sci

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“…Either to extend the stability range or to improve the toxicological profile of the formulation, low molecular weight surfactant mixtures have often been replaced by polymer/surfactant combinations. [7][8][9] Polymers selected for the purpose have to be biocompatible and relatively stable to storage conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Poly(ethylene glycol), hydroxylated poly(meth)acrylates, ethylene-vinyl acetate copolymers and polyurethanes are among the most used polymers for the purpose. 7 In particular, gelled oilin-water emulsions have attracted interest as encapsulation devices, especially in drug delivery. [10][11][12] They are often produced using a two-step process in which, firstly, the oil is dispersed in an aqueous polymer solution which is then crosslinked to entrap the oil droplets into a hydrogel matrix.…”

Section: Introductionmentioning

confidence: 99%

E-beam irradiation and UV photocrosslinking of microemulsion-laden poly(N-vinyl-2-pyrrolidone) hydrogels for “in situ” encapsulation of volatile hydrophobic compounds

et al. 2011

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“…A more recent direction of this research has realized the importance of the variation in vapour pressure during evaporation [32][33][34][35] and demonstrated the potential for information from vapour pressure determinations from selected parts of a system [36] to give useful predictions of the change in vapour pressures during evaporation of any formulation within the system.…”

Section: Introductionmentioning

confidence: 99%

Vapour pressures of phenethyl alcohol and limonene in systems with water and Laureth 4

Friberg

Yin

Aikens

1998

Intern J of Cosmetic Sci

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The vapour pressures of phenethyl alcohol and limonene in their water-in-oil microemulsion region were measured by head space gas chromatography of equilibrated samples. The results showed that the vapour pressure of both fragrance compounds in their mutual solutions without surfactant or water was significantly greater than that in ideal solutions. The high vapour pressure of phenethyl alcohol in such solutions was strongly reduced by addition of the surfactant, Laureth 4, a commercial nonionic surfactant, approximately teteraethylene glycol dodecyl ether. Saturation of the solutions with water gave a further reduction in the vapour pressure. The high vapour pressure of limonene was not influenced to a corresponding degree; in fact, only a small influence was found. The results were interpreted as resulting from differences in intermolecular interactions due to location of the fragrance compounds in different parts of the colloidal association structures.

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Vapour pressure of some fragrance ingredients in emulsion and microemulsion formulations

Cited by 12 publications

References 11 publications

Change of amphiphilic association structures during evaporation from emulsions in surfactant–fragrance–water systems

Change of amphiphilic association structures during evaporation from emulsions in surfactant–fragrance–water systems

E-beam irradiation and UV photocrosslinking of microemulsion-laden poly(N-vinyl-2-pyrrolidone) hydrogels for “in situ” encapsulation of volatile hydrophobic compounds

Vapour pressures of phenethyl alcohol and limonene in systems with water and Laureth 4

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