Stabilization of food-grade liquid water-in-vegetable oil emulsions by modifying emulsifier interactions at the oil-water interface

2020 ◽  
Author(s):  
Maria Romero ◽  
Dérick Rousseau ◽  
Supratim Ghosh
Keyword(s):  
Vegetable Oil ◽  
Liquid Water ◽  
Water Interface ◽  
Food Grade ◽  
Oil Water ◽  
Oil Emulsions

scholarly journals Dendritic nanofibers of gold formed by the electron transfer at the interface between water and a highly hydrophobic ionic liquid

2015 ◽  
Vol 51 (71) ◽  
pp. 13638-13641 ◽  
Author(s):  
Naoya Nishi ◽  
Tatsuya Kakinami ◽  
Tetsuo Sakka
Keyword(s):  
Electron Transfer ◽  
Ionic Liquid ◽  
Liquid Water ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Water Interface ◽  
Hydrophobic Ionic Liquid ◽  
Oil Water ◽  
Highly Hydrophobic ◽  
Conventional Oil

Novel nanostructures, dendritic nanofibers of gold, have been found to be formedviaan electron-transfer reaction at the ionic liquid–water interface, instead of the more conventional oil–water interface.

Effect of Rheology Properties of Oil/Water Interface on Demulsification of Crude Oil Emulsions

2015 ◽  
Vol 54 (17) ◽  
pp. 4851-4860 ◽  
Author(s):  
Jun Tao ◽  
Peng Shi ◽  
Shenwen Fang ◽  
Keyi Li ◽  
Heng Zhang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Water Interface ◽  
Oil Water ◽  
Oil Emulsions

scholarly journals Behaviour of hybrid inside/out Janus nanotubes at an oil/water interface. A route to self-assembled nanofluidics?

2016 ◽  
Vol 191 ◽  
pp. 391-406 ◽  
Author(s):  
P. Picot ◽  
O. Taché ◽  
F. Malloggi ◽  
T. Coradin ◽  
A. Thill
Keyword(s):  
Hydrophobic Surface ◽  
Continuous Phase ◽  
Internal Cavity ◽  
Water Interface ◽  
Natural Aluminosilicate ◽  
Oil Water ◽  
Self Assembled ◽  
Oil Emulsions ◽  
Chemical Groups ◽  
Inside Out

Imogolites are natural aluminosilicate nanotubes that have a diameter of a few nanometers and can be several microns long. These nanotubes have different chemical groups on their internal (Si–OH) and external (Al–OH–Al) surfaces, that can be easily functionalised independently on both surfaces. Here we show that taking advantage of the particular shape and chemistry of imogolite, it is possible to prepare inside/out Janus nanotubes. Two kinds of symmetric Janus nanotubes are prepared: one with an external hydrophilic surface and an internal hydrophobic cavity (imo-CH3) and one with an external hydrophobic surface and a hydrophilic internal cavity (OPA-imo). The behaviour of such inside/out Janus nanotubes at oil/water interfaces is studied. The OPA-imo adsorbs strongly at the oil/water interface and is very efficient in stabilising water-in-oil emulsions through an arrested coalescence mechanism. Imo-CH3 also adsorbs at the oil/water interface. It stabilises oil-in-water emulsions by inducing slow oil-triggered modifications of the viscosity of the continuous phase. The possible transport of small molecules inside the imo-CH3 nanotubes is evidenced, opening up routes towards self-assembled nanofluidics.

Monolayers of Mixed Surfactants at the Oil-Water Interface, Hydrophobic Interactions, and Stability of Water-in-Oil Emulsions

Langmuir ◽  
1995 ◽  
Vol 11 (2) ◽  
pp. 585-590 ◽  
Author(s):  
L. Ghaicha ◽  
R. M. Leblanc ◽  
F. Villamagna ◽  
A. K. Chattopadhyay
Keyword(s):  
Hydrophobic Interactions ◽  
Mixed Surfactants ◽  
Water Interface ◽  
Oil Water ◽  
Oil Emulsions ◽  
Stability Of Water

Structure of Inclusion Complexes of Cyclodextrins with Triglyceride at Vegetable Oil/Water Interface

1992 ◽  
Vol 57 (3) ◽  
pp. 655-656 ◽  
Author(s):  
K.AZUKO SHIMADA ◽  
K.IMIKO KAWANO ◽  
J.UNKO ISHII ◽  
T.AKASHI NAKAMURA
Keyword(s):  
Inclusion Complexes ◽  
Vegetable Oil ◽  
Water Interface ◽  
Oil Water

scholarly journals The Influence of Some Interfacial Properties of PEO-b-PPO Copolymers on Dewatering of Water-in-Oil Asphaltene Model Emulsions

2009 ◽  
Vol 3 (1) ◽  
pp. 53-58
Author(s):  
Joao Batista Ramalho ◽  
◽  
Natalie Ramos ◽  
Elizabete Lucas ◽  
◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Water Interface ◽  
Molecular Area ◽  
Interfacial Activity ◽  
Surfactant Solutions ◽  
Interfacial Concentration ◽  
Poly Ethylene Oxide ◽  
Oil Water ◽  
Poly Ethylene ◽  
Oil Emulsions

Three different macromolecular structures of poly(ethylene oxide-b-propylene oxide) copolymers, used in formulations of commercial demulsifiers for breaking water-in-crude oil emulsions, were investigated. The interfacial activity (), the lower interfacial tension (m), the critical micelle concentration (CMC), the interfacial concentration (Γ) and the molecular area (A) adsorbed at the interface of the surfactant solutions were evaluated. These results were correlated to surfactant performance in coalescing three different asphaltene model emulsions. The PEO-b-PPO commercial demulsifiers, that were capable to dewater asphaltene model emulsions, exhibited interfacial activity to the oil-water interface, reduced the interfacial tension to low values, reached the CMC at low concentration and presented low molecular area adsorbed at the interface.

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