Preparation, characterization and application of a surfactant-free microemulsion containing 1-octen-3-ol, ethanol, and water

Zhang, Xiaoyu; Song, Miaomiao; Chai, Jinling; Cui, Xiaocui; Wang, Jiao

doi:10.1016/j.molliq.2019.112278

Cited by 19 publications

(5 citation statements)

References 60 publications

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“…Cryo-SEM can reveal the size of nanoemulsion structures on frozen fracture surfaces and is correlated with DLS, revealing that the addition of surfactants can widen the size and structural distribution [ 103 ]. Cryo-TEM can observe the droplet structure in surfactant-free microemulsions, confirming the existence of bicontinuous phase microemulsions [ 104 ]. To address the issue of electron microscopy providing only static information about samples, liquid-phase transmission electron microscopy (LPTEM) has been developed and successfully used to observe changes in microemulsion droplets due to formula changes in undisturbed conditions [ 105 ].…”

Section: Microemulsion Characterization Techniquesmentioning

confidence: 94%

“…Figure 9 shows the microstru a microemulsion observed under cryo-electron microscopy. Cryo-SEM can reveal of nanoemulsion structures on frozen fracture surfaces and is correlated with DLS ing that the addition of surfactants can widen the size and structural distributio Cryo-TEM can observe the droplet structure in surfactant-free microemulsions, c ing the existence of bicontinuous phase microemulsions [104]. To address the issue tron microscopy providing only static information about samples, liquid-phase tr…”

Section: Cryo-electron Microscopy (Cryo-em)mentioning

confidence: 99%

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Advancements in Characterization Techniques for Microemulsions: From Molecular Insights to Macroscopic Phenomena

Li,

Qu,

Liu

et al. 2024

Molecules

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Microemulsions are thermodynamically stable, optically isotropic, transparent, or semi-transparent mixed solutions composed of two immiscible solvents stabilized by amphiphilic solutes. This comprehensive review explores state-of-the-art techniques for characterizing microemulsions, which are versatile solutions essential across various industries, such as pharmaceuticals, food, and petroleum. This article delves into spectroscopic methods, nuclear magnetic resonance, small-angle scattering, dynamic light scattering, conductometry, zeta potential analysis, cryo-electron microscopy, refractive index measurement, and differential scanning calorimetry, examining each technique’s strengths, limitations, and potential applications. Emphasizing the necessity of a multi-technique approach for a thorough understanding, it underscores the importance of integrating diverse analytical methods to unravel microemulsion structures from molecular to macroscopic scales. This synthesis provides a roadmap for researchers and practitioners, fostering advancements in microemulsion science and its wide-ranging industrial applications.

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Section: Microemulsion Characterization Techniquesmentioning

confidence: 94%

Section: Cryo-electron Microscopy (Cryo-em)mentioning

confidence: 99%

Advancements in Characterization Techniques for Microemulsions: From Molecular Insights to Macroscopic Phenomena

Li,

Qu,

Liu

et al. 2024

Molecules

View full text Add to dashboard Cite

show abstract

“…Water was added drop‐wise using a burette, and the samples were stirred with a magnetic stirrer for 5 min in the experimental set‐up shown in Figure . The mixture was then observed for its transparency as suggested in literature . Passing of a red laser beam (Class IIIA laser with a wavelength of 650 nm) through the microemulsions without getting scattered was used as the confirmation of the formation of microemulsions .…”

Section: Experimental Workmentioning

confidence: 99%

Effect of alcohol on the properties of water‐in‐diesel microemulsion fuels

Abrar

Bhaskarwar

2020

Env Prog and Sustain Energy

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Microemulsions are thermodynamically stable alternatives to diesel, which could be directly used in the engine, without any modification. Surfactant‐free water‐in‐diesel microemulsions with 60.0–70.0% (vol/vol) diesel, 29.0–39.5% (vol/vol) butanol, and 0.5–2.0% (vol/vol) water were formulated, and their properties were compared against standard specifications of diesel fuel oil (ASTM D975). The calorific values of the microemulsion fuels (41.23–44.75 MJ/kg) were higher than the volume‐fraction weighted averages (39.20–40.75 MJ/kg). The cloud points (−0.5 to −3.5°C) were lower than expected (0°C). The specific gravities (0.825–0.831), viscosities (2.16–2.39 mm2/s), and sulfur contents (27–45 mg/kg) were also within the permissible limits. Some of the microemulsions showed improved cetane indices (cetane index up to 49.5), while the microemulsions with higher butanol percentages, for which cetane index reduced to 38, would require the use of cetane improvers. Since these microemulsions satisfied the ASTM specifications, they could be potentially used as a cleaner alternative to diesel.

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“…Needless to say, in recent years, new microemulsion systems have also been introduced that use ionic liquids instead of water or oil in their structures [7][8][9][10][11]. Even some surfactant-free microemulsions have been designed and studied in recent years [12][13][14]. In all proposed microemulsion systems, if they are using for biological applications, their ingredients must be biocompatible.…”

Section: Introductionmentioning

confidence: 99%

Development of a new biocompatible microemulsion formulation to improve the solubility of celecoxib

Salabat

Ghorbani

2023

Preprint

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In this research work, a new biocompatible microemulsion containing castor oil has been formulated to increase the solubility of celecoxib, as a well-known anti-inflammatory drug. In this formulation castor oil has also anti-inflammatory properties. The proposed oil-in-water microemulsion composed of tween 80 as surfactant, isobutanol as co-surfactant, and castor oil as the oil phase. In the first step, the phase diagrams of the microemulsion systems with surfactant to co-surfactant mass ratios of 4:1 and 2:1 were prepared at ambient temperature. Then, using the obtained phase diagrams, the appropriate formulations were selected by combining different percentages of water, oil, surfactant and co-surfactant in the microemulsion region. Some of physic-chemical properties, such as electrical conductivity, density, refractive index, surface tension and particle size of the selected microemulsion formulations have been determined at 298 K. After that, the solubility of celecoxib in the selected formulations was determined and compared with other reported microemulsion formulations. Interesting results from this section indicated that the solubility of celecoxib significantly increased compared to pure water and the previous proposed microemulsion formulations. The results of this study can be used to provide suitable formulations based on the biocompatible microemulsions for celecoxib in pharmaceutical industry.

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Preparation, characterization and application of a surfactant-free microemulsion containing 1-octen-3-ol, ethanol, and water

Cited by 19 publications

References 60 publications

Advancements in Characterization Techniques for Microemulsions: From Molecular Insights to Macroscopic Phenomena

Advancements in Characterization Techniques for Microemulsions: From Molecular Insights to Macroscopic Phenomena

Effect of alcohol on the properties of water‐in‐diesel microemulsion fuels

Development of a new biocompatible microemulsion formulation to improve the solubility of celecoxib

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