Self-assembly and emulsions of oleic acid–oleate mixtures in glycerol

Delample, Mathieu; Jérôme, François; Barrault, J.; Douliez, Jean‐Paul

doi:10.1039/c0gc00452a

Cited by 31 publications

(31 citation statements)

References 38 publications

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“…). This procedure corresponded to 5000 J sonication energy, which is relatively energy‐efficient compared to a previous study (Delample et al, ). Nanoemulsions are stable, and no obvious nanoemulsion droplet coarsening is observed upon dilution after 30 days.…”

Section: Resultsmentioning

confidence: 99%

A Thermally Stable Polyamine/Unsaturated Fatty Acid System: Gelation Behaviors and Application

Zhang

et al. 2019

J Surfact & Detergents

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The gelation behavior of diethylenetriamine (DETA) and oleic acid (OLA) with different molar ratios in water was investigated. The gels, which were composed of lamellar phase and vesicles, were characterized using small‐angle X‐ray scattering (SAXS) and freeze‐fracture transmission electron microscopy (FF‐TEM). The responsive rheological properties were also investigated. Our results show that lamellar gels and rodlike micelles were formed successively with the increase of the DETA/OLA molar ratio. The lamellar gels exhibiting high thermal stability can be obtained in a wide range of polyamine/unsaturated fatty acid molar ratios. The mechanism of lamellar gel formation was explained by the packing parameter and the noncovalent interactions between the building blocks. Moreover, gel–sol transition can be triggered by tuning pH and ionic strength. This system has a good emulsification property, and no obvious nanoemulsion droplet coarsening is observed upon dilution after 30 days.

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Section: Resultsmentioning

confidence: 99%

A Thermally Stable Polyamine/Unsaturated Fatty Acid System: Gelation Behaviors and Application

Zhang

et al. 2019

J Surfact & Detergents

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“…Nevertheless, recently big progress has been made in this area, and it was shown that mixtures of fatty acids can form stable dispersions under controlled experimental conditions. [19][20][21][22] For instance, it is possible to disperse fatty acids in water using soluble organic counterions. [23] The aim of this research is to prepare and characterize new green coatings made from fatty acids or their derivatives dispersed in chitosan film, to create new backing layer.…”

Section: Introductionmentioning

confidence: 99%

New backing layer for transdermal drug delivery systems: coatings based on fatty acid and beeswax on chitosan films

Rullier-Birat

Cazalbou

Nassar

et al. 2014

Journal of Adhesion Science and Technology

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Fatty acids and beeswax are known to improve barrier properties of biodegradable materials. Thanks to their hydrophobic character, they can act as a barrier against water giving to the material more occlusive properties. This work was aimed at preparing fatty acid and beeswax coatings for a transdermal drug delivery system. In order to study occlusive properties of these coatings, water vapor permeability and contact angle measurements were carried out. The most homogeneous coatings were obtained from the beeswax mixture. Coatings made from emulsified beeswax exhibit high hydrophobic properties and relatively good mechanical properties compared to chitosan film without coatings.

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“…These vesicular systems (RCOO − HOOCR) are formed from the unionized fatty acid (RCOOH) and its corresponding alkaline salt (RCOO − ) [1,2]. Due to their origin, these associated dispersed systems, in the form of bilayered vesicles, are biocompatible, biodegradable, and non-toxic and can be classified in the green chemistry field [3]. …”

Section: Introductionmentioning

confidence: 99%

“…Most of the potential applications of these aqueous dispersions are focused on the formation of alkyl double layer [1,2,3,4,5,6,7,8], and the presence of the hydrophobic components allows for the solubilization of various hydrophobic molecules (e.g., some superior alcohols [9,10], bioactive substances, drugs, antifungal, and dyes [1,2,5,9,10]).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Non-Toxic Silica Particles Stabilized by Molecular Complex Oleic-Acid/Sodium Oleate

Spataru

Ianchiş

Petcu

et al. 2016

IJMS

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The present work is focused on the preparation of biocompatible silica particles from sodium silicate, stabilized by a vesicular system containing oleic acid (OLA) and its alkaline salt (OLANa). Silica nanoparticles were generated by the partial neutralization of oleic acid (OLA), with the sodium cation present in the aqueous solutions of sodium silicate. At the molar ratio OLA/Na+ = 2:1, the molar ratio (OLA/OLANa = 1:1) required to form vesicles, in which the carboxyl and carboxylate groups have equal concentrations, was achieved. In order to obtain hydrophobically modified silica particles, octadecyltriethoxysilane (ODTES) was added in a sodium silicate sol–gel mixture at different molar ratios. The interactions between the octadecyl groups from the modified silica and the oleyl chains from the OLA/OLANa stabilizing system were investigated via simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC) (TG-DSC) analyses.A significant decrease in vaporization enthalpy and an increase in amount of ODTES were observed. Additionally, that the hydrophobic interaction between OLA and ODTES has a strong impact on the hybrids’ final morphology and on their textural characteristics was revealed. The highest hydrodynamic average diameter and the most negative ζ potential were recorded for the hybrid in which the ODTES/sodium silicate molar ratio was 1:5. The obtained mesoporous silica particles, stabilized by the OLA/OLANa vesicular system, may find application as carriers for hydrophobic bioactive molecules.

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Self-assembly and emulsions of oleic acid–oleate mixtures in glycerol

Cited by 31 publications

References 38 publications

A Thermally Stable Polyamine/Unsaturated Fatty Acid System: Gelation Behaviors and Application

A Thermally Stable Polyamine/Unsaturated Fatty Acid System: Gelation Behaviors and Application

New backing layer for transdermal drug delivery systems: coatings based on fatty acid and beeswax on chitosan films

Synthesis of Non-Toxic Silica Particles Stabilized by Molecular Complex Oleic-Acid/Sodium Oleate

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