The effect of polymeric surfactants on the rheological properties of nanoemulsions

Wulff-Pérez, Miguel; Martín-Rodríguez, Agustín; Gálvez-Ruiz, Marı́a José; Vicente, J. De

doi:10.1007/s00396-012-2780-1

Cited by 27 publications

(15 citation statements)

References 37 publications

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“…For example, polymeric surfactants can lead to polymer brush formation to impart long-range steric repulsions between droplets, [75] just as in other polymer-grafted colloids. A number of studies have also examined routes by which polymer bridging can be used to modify the interactions between nanodroplets.…”

Section: Polymer-induced Interactionsmentioning

confidence: 99%

“…In the case of non-ionic surfactants, surfactants with bulkier head groups are typically chosen. Examples include ethoxylated alkanes such as Tween, Span and Brij surfactants and polyoxyethylene block co-polymers for the production of both oil-in-water [73][74][75] and water-in-oil nanoemulsions. [73,76] Not surprisingly, for such surfactants both the size and colloidal dispersion stability of nanoemulsions track qualitatively with the hydrophile-lipophile balance (HLB), [73,77] a heuristic that is commonly used for selection of surfactants to stabilize larger emulsions.…”

Section: Surface Forcesmentioning

confidence: 99%

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Colloidal behavior of nanoemulsions: Interactions, structure, and rheology

Helgeson

2016

Current Opinion in Colloid & Interface Science

107

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Nanoemulsions exhibit unique behavior due to their nanoscopic dimensions, including remarkable droplet stability, interactions and rheology. These properties are significantly enhanced by nanoscopic droplet size, as well as selection of surfactant and other molecular species in solution. Electrostatic and polymer-induced interdroplet interactions are particularly powerful tools for fine-tuning the interdroplet interactions, and have led to stimuli-responsive nanoemulsion systems that provide deep insight into their unique properties. As such, nanoemulsions have emerged as powerful model systems for studying a number of colloidal phenomena including suspension rheology, repulsive and attractive colloidal glasses, aggregation processes, colloidal gelation and phase instability, and associative network formation in polymer-colloid mixtures. This review summarizes recent advances in understanding the colloidal behavior of nanoemulsions, and provides a unifying framework for understanding the various complex states that emerge, as well as perspective on emerging challenges and opportunities that will advance the use of nanoemulsions in both fundamental colloid science and technological applications. Highlights We review efforts to understand & control colloidal behavior of nanoemulsions.  Electrostatic and polymer-induced interdroplet interactions are discussed.  Repulsive interactions lead to jammed and compressed states at low volume fraction.  Attractive interactions lead to clustering, gelation and colloidal phase separation.  Nanoemulsions are model fluids to study arrested states in colloidal dispersions.

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Section: Polymer-induced Interactionsmentioning

confidence: 99%

Section: Surface Forcesmentioning

confidence: 99%

Colloidal behavior of nanoemulsions: Interactions, structure, and rheology

Helgeson

2016

Current Opinion in Colloid & Interface Science

107

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“…NE are comprised basically of three components: water, oil and surfactants, and their physicochemical properties may influence the behavior of the system [11]. Many vegetable oils such as linseed oil [12], grape seed oil and almond kernel oil [13], olive and coconut oil [14] among others [15] have been studied to prepare NE. In this context, pomegranate seed oil (PSO) has attracted interest due to its high content of fatty acids, estrogens and polyphenols compounds which provide antioxidant, anti-inflammatory and antitumor properties [16,17].…”

Section: Introductionmentioning

confidence: 99%

Ketoprofen-loaded pomegranate seed oil nanoemulsion stabilized by pullulan: Selective antiglioma formulation for intravenous administration

Ferreira

Cervi

Gehrcke

et al. 2015

Colloids and Surfaces B: Biointerfaces

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“…Due to the fact that these formulations are highly diluted ( ϕ int < 0.02), the relative viscosity can be described by the Einstein equation (Eq. 3) 11, 12.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the emulsions and nanoemulsions of the oil‐in‐water type (O/W) exhibit pseudoplastic nature 7, 8, 12–14. On the other hand, water‐in‐oil (W/O) nanoemulsions behave like Newtonian liquids.…”

Section: Introductionmentioning

confidence: 99%

Rheological Properties of Nanoemulsions Stabilized by Polysorbate 80

2015

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The rheological properties of nanoemulsions based on three types of oil phases, namely, Crodamol GTCC, Crodamol PC, and oleic acid, were analyzed and determined. The emulsions were stabilized by Polysorbate 80. Geranic acid was selected as a model active substance. The obtained results confirm that the studied nanoemulsions are pseudoplastic non-Newtonian fluids. The Herschel-Bulkley model accurately describes the rheological properties of the developed systems. The phase inversion point for the Crodamol GTCC/Polysorbate 80/water system was observed at 50 wt % dispersed-phase concentration. The rheological results served as the basis for calculation of a theoretical diffusion coefficient of the active ingredient in the studied nanoemulsions.

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The effect of polymeric surfactants on the rheological properties of nanoemulsions

Cited by 27 publications

References 37 publications

Colloidal behavior of nanoemulsions: Interactions, structure, and rheology

Colloidal behavior of nanoemulsions: Interactions, structure, and rheology

Ketoprofen-loaded pomegranate seed oil nanoemulsion stabilized by pullulan: Selective antiglioma formulation for intravenous administration

Rheological Properties of Nanoemulsions Stabilized by Polysorbate 80

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