Spontaneous Emulsification Produced by Chemical Reactions

Nishimi, Taisei; Miller, Clarence A.

doi:10.1006/jcis.2001.7467

Cited by 21 publications

(20 citation statements)

References 34 publications

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“…Liquid crystal role in emulsion stabilization has been studied in equilibrium systems (15)(16)(17)(18)(19)(20)(21). The dynamics of the equilibration process between phases containing model surfactants and cosurfactants was also studied (22)(23)(24)(25)(26)(27)(28); however, to our knowledge, the formation of liquid crystal and its role on emulsion stability has not been studied on real crude oil systems of industrial importance.…”

Section: Introductionmentioning

confidence: 97%

Sandwich Structures at Oil–Water Interfaces under Alkaline Conditions

Horváth‐Szabó

Czarnecki

Masliyah

2002

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 97%

Sandwich Structures at Oil–Water Interfaces under Alkaline Conditions

Horváth‐Szabó

Czarnecki

Masliyah

2002

Journal of Colloid and Interface Science

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“…Alcohols such as 1, 3-butane diol [24][25][26] , ethanol 27) , D-glucose, D-maltose 28) , and n-octanol 29) have been used for preparing ultrafine emulsions in order to give the physicochemical features suitable for preparing microemulsions to surfactants. The effect of EPDME derivatives on surfactants can be used for preparing ultrafine emulsions in a similar way.…”

Section: Resultsmentioning

confidence: 99%

Development of Novel Multifunctional Cosmetic Raw Materials and Their Applications. IV. The Effect of Structure of Polyoxyethylene / Polyoxypropylene Derivative on the Self-organizing Structures of Surfactants

et al. 2009

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In this study, the effect of a random copolymer of polyoxyethylene (POE, 38 mol) / polyoxypropylene (POP, 10 mol) pentaerythrytol tetramethyl ether [PEPTME (38/10)], which is unable to form a self-organizing structure on account of its bulkiness, on the microemulsion phase was examined. The phase diagram of the liquid paraffin -nonionic surfactant PEPTME (38/10) -water system was compared with that of polyoxyethylene (POE) / polyoxypropylene (POP) dimethyl ether (EPDME) system which has a straight-chain structure. In the previous study, the authors reported that a special droplet type microemulsion (highly concentrated microemulsion) was formed, when EPDME was distributed in the hydrophilic moiety of a surfactant in a lamellar liquid crystalline phase. In contrast, it was found that the use of PEPTME (38/10) resulted in disappearance of lamellar as well as hexagonal and cubic liquid crystals, and the formation of an optically isotropic and fluid phase owing to the relationship between the original microemulsion phase and the highly concentrated microemulsion phase. Thus, PEPTME (38/10) was considered to be most suited for preparing highly concentrated microemulsions.

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“…Nishimi and Miller have successfully formulated a new spontaneous emulsification system that uses an HLB transition triggered by chemical reaction. [12] In this case, it is the transition from Winsor II ! Winsor III !…”

Section: Designing a Spontaneous Emulsification Systemmentioning

confidence: 97%

The Formation of Middle‐Phase Microemulsions of Polar Oils

Nishimi

2008

Macromolecular Symposia

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Summary: Middle-phase microemulsions exhibit the unique properties of an ultralow interfacial tension and a bicontinuous structure formed from the water and oil components. New developments exploiting these properties are described. In designing such systems, it is important that the spontaneous transition of the oil droplets from Winsor II through Winsor III to the Winsor I state is brought about by diffusion or chemical reaction. The selection of the hydrophobic and lipophilic surfactants is critical when low-energy emulsification systems for highly polar oils are being developed.

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Spontaneous Emulsification Produced by Chemical Reactions

Cited by 21 publications

References 34 publications

Sandwich Structures at Oil–Water Interfaces under Alkaline Conditions

Sandwich Structures at Oil–Water Interfaces under Alkaline Conditions

Development of Novel Multifunctional Cosmetic Raw Materials and Their Applications. IV. The Effect of Structure of Polyoxyethylene / Polyoxypropylene Derivative on the Self-organizing Structures of Surfactants

The Formation of Middle‐Phase Microemulsions of Polar Oils

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