Highly concentrated emulsions: 1. Average drop size determination by analysis of incoherent polarized steady light transport

Paruta-Tuarez, Emilio; Fersadou, Hala; Sadtler, Véronique; Marchal, Philippe; Choplin, Lionel; Baravian, Christophe; Castel, Christophe

doi:10.1016/j.jcis.2010.02.036

Cited by 10 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Light scattered by the sample and measured by the detector is processed using the known separation distance to recover the sample scattering properties. Alternatively, the diffuse broadening of a point source at a sample surface can be imaged and analyzed to extract l * [1]. While useful and already available in early commercial implementations, all of these methods require scanning of either the probe or the sample to map a sample area.…”

Section: Methodsmentioning

confidence: 99%

“…The determination of a sample's optical scattering properties is important for a diverse set of fundamental research areas and industrial applications ranging from stability monitoring of complex fluids and formulations (for example to differentiate sedimentation, creaming, phase separation) [1][2][3] to in-vivo biological studies of tissue composition and blood perfusion [4][5][6][7][8]. A number of techniques exist which provide a single measurement of the scattering properties of a given sample volume.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rapid high resolution imaging of diffusive properties in turbid media

Scheffold¹,

Block²

2011

Opt. Express

View full text Add to dashboard Cite

Abstract:We propose a laser speckle based scheme that allows the analysis of local scattering properties of light diffusely reflected from turbid media. This turbid medium can be a soft material such as a colloidal or polymeric material but can also be biological tissue. The method provides a 2D map of the scattering properties of a complex, multiple scattering medium by recording a single image. We demonstrate that the measured speckle contrast can be directly related to the local transport mean free path l * or the reduced scattering coefficient μ t = 1/l * of the medium. In comparison to some other approaches, the method does not require scanning (of a laser beam, detector or the sample itself) in order to generate a spatial map. It can conveniently be applied in a reflection geometry and provides a single characteristic value at any given position with an intrinsic resolution typically on the order of 5-50 μm. The actual resolution is however limited by the transport mean free path itself and can thus range from microns to millimeters.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rapid high resolution imaging of diffusive properties in turbid media

Scheffold¹,

Block²

2011

Opt. Express

View full text Add to dashboard Cite

show abstract

“…20 In this study, the surfactant was incorporated into the oil phase and the aqueous phase was added at a flow rate of 15 g/min and an agitation speed of 500 rpm. Three formulations, in terms of HLB number, were prepared: 5.6, 7.7, and 10.…”

Section: Preparation Of the Highly Concentrated Inverse Emulsionsmentioning

confidence: 99%

“…The average drop sizes (R) of emulsions were determined using the analysis of incoherent polarized steady light transport (AIPSLT) and the geometrical model proposed in a previous work. 20 …”

Section: Preparation Of the Highly Concentrated Inverse Emulsionsmentioning

confidence: 99%

Analysis of the Princen and Kiss Equation To Model the Storage Modulus of Highly Concentrated Emulsions

Paruta-Tuarez

Marchal

Sadtler

et al. 2011

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

The universality of the model proposed by Princen and Kiss is analyzed in the case of highly concentrated water-in-oil emulsions containing dispersed-phase volume fractions (j) ranging from 0.89 to 0.97. Although Princen and Kiss equation has been rigorously established for a two-dimensional system and involves no adjustable parameter, the model for a tridimensional system, which is an extrapolation of the 2D model, requires the introduction of a phenomenological linear function E(j) to account for experimental deviations. As mentioned by Princen and Kiss themselves, there is no satisfactory theoretical derivation of E(j). Indeed, in this paper we point out that the linear dependence in j of E(j) is a consequence of the particular set of experimental data exploited by Princen and Kiss. Another choice of experimental data could have led to propose other mathematical functions since at very high volume fraction, some experimental data found in the literature show a more rapid increase of the storage modulus G 0 with j than predicted by Princen and Kiss equation, which tends to underestimate the values of G 0 . Finally, for the studied highly concentrated emulsions, the dispersed-phase volume fraction dependence of storage modulus is discussed.

show abstract

“…The type of self-assembly can be bicontinuous cubic Pn3m or Im3m, micellar cubic Fd3m, hexagonal (H 2 ) or inverse micelles (L 2 ) ( Figure 5). W/O emulsions are usually very concentrated and their stability is governed by the concentration of the components [94,95]. For instance, the emulsion can be stabilized by an optimum concentration of emulsion stabilizer or by obtaining a very high concentration of an internal phase or both of the above.…”

Section: Lipid Nanostructured Emulsions: Next Level Of Structural Hiementioning

confidence: 99%

Lipid Self-Assemblies and Nanostructured Emulsions for Cosmetic Formulations

Kulkarni

2016

Cosmetics

View full text Add to dashboard Cite

A majority of cosmetic products that we encounter on daily basis contain lipid constituents in solubilized or insolubilized forms. Due to their amphiphilic nature, the lipid molecules spontaneously self-assemble into a remarkable range of nanostructures when mixed with water. This review illustrates the formation and finely tunable properties of self-assembled lipid nanostructures and their hierarchically organized derivatives, as well as their relevance to the development of cosmetic formulations. These lipid systems can be modulated into various physical forms suitable for topical administration including fluids, gels, creams, pastes and dehydrated films. Moreover, they are capable of encapsulating hydrophilic, hydrophobic as well as amphiphilic active ingredients owing to their special morphological characters. Nano-hybrid materials with more elegant properties can be designed by combining nanostructured lipid systems with other nanomaterials including a hydrogelator, silica nanoparticles, clays and carbon nanomaterials. The smart materials reviewed here may well be the future of innovative cosmetic applications.

show abstract

Highly concentrated emulsions: 1. Average drop size determination by analysis of incoherent polarized steady light transport

Cited by 10 publications

References 25 publications

Rapid high resolution imaging of diffusive properties in turbid media

Rapid high resolution imaging of diffusive properties in turbid media

Analysis of the Princen and Kiss Equation To Model the Storage Modulus of Highly Concentrated Emulsions

Lipid Self-Assemblies and Nanostructured Emulsions for Cosmetic Formulations

Contact Info

Product

Resources

About