Formation and Cleansing Performance of Bicontinuous Microemulsions in Water/Poly (oxyethylene) Alkyl Ether/Ester-Type Oil Systems

Aramaki, Kenji; Tawa, Kosuke; Shrestha, Lok Kumar; Iwanaga, Tetsuro; Kamada, Miho

doi:10.5650/jos.62.803

Cited by 8 publications

(6 citation statements)

References 21 publications

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“…The applications of µEs include a wide span of areas such as food science, detergents, lubricants, coatings [ 91 ], antibacterial and pesticides, cosmetics [ 92 , 93 ], drug delivery, nanoparticle synthesis, biotechnology, isolation and extraction, chemical reactors, templates for gelification and even works of art restoration [ 94 ]. Here, we provide a brief description of the latest applications of µEs in some selected areas:…”

Section: Achievements and Challengesmentioning

confidence: 99%

Microemulsion Microstructure(s): A Tutorial Review

et al. 2020

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Microemulsions are thermodynamically stable, transparent, isotropic single-phase mixtures of two immiscible liquids stabilized by surfactants (and possibly other compounds). The assortment of very different microstructures behind such a univocal macroscopic definition is presented together with the experimental approaches to their determination. This tutorial review includes a necessary overview of the microemulsion phase behavior including the effect of temperature and salinity and of the features of living polymerlike micelles and living networks. Once these key learning points have been acquired, the different theoretical models proposed to rationalize the microemulsion microstructures are reviewed. The focus is on the use of these models as a rationale for the formulation of microemulsions with suitable features. Finally, current achievements and challenges of the use of microemulsions are reviewed.

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Section: Achievements and Challengesmentioning

confidence: 99%

Microemulsion Microstructure(s): A Tutorial Review

et al. 2020

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“…So the observed patterns of around 200 nm are quite distorted even for the rehydrated ones and not representative of a smaller domain size typical of BMEs. 34 In consequence, no domain size estimation is drawn from these images.…”

Section: Resultsmentioning

confidence: 99%

Nanostructured Thermal Responsive Materials Synthesized by Soft Templating

Vancaeyzeele

Olivier

Petroffe

et al. 2017

ACS Appl. Mater. Interfaces

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We capitalized herein the inherent tortuosity of bicontinuous microemulsion to conceive nanostructured drug-delivery devices. First, we show that it is possible to synthesize bicontinuous materials with continuous hydrophilic domains of the poly(N-isopropylacrylamide) (PNIPAM) network entangled with continuous hydrophobic polymer domains, with dual-phase continuity being imposed by the bicontinuous microemulsions used as a soft template. Particular attention is paid to the microemulsion formulations using a surfmer to preserve the one-to-one replication of the bicontinuous nanostructure after polymerization. These materials keep a volume phase transition with temperature that allows considering them as drug carriers for controlled release. PNIPAM, which plays the role of the active ingredient reservoir, is confined in the bicontinuous structure. As expected, the PNIPAM enclosure limits the surface area in contact with the releasing aqueous solution and thus slows down the desorption of aspirin, which is used as a model drug. The hydrophobic polymers play the role of in situ-created transport barriers without hindering it as all the loaded aspirin in this bicontinuous structure still remains available.

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“…This apparent contradiction can, however, be easily resolved when one considers that the domains imposed by the bicontinuous template are relatively small (30-50 nm). [54] At such scale, hydrophilic and hydrophobic domains are tightly intertwined, and polymer chains relax at the same temperature. The TEM picture shown in Figure 3D confirms the limited phase separation arising from the soft template.…”

Section: Pnipam/pba Bc Materialsmentioning

confidence: 99%