Direct observation of the formation and destruction of the inverted continuous oil phase in the micro-outlet region achieved by the confined diluted O/W emulsion stream

Soft Matter ◽  
2014 ◽  
Vol 10 (40) ◽  
pp. 7946-7951 ◽  
Author(s):  
Liran Ma ◽  
Xuefeng Xu ◽  
Chenhui Zhang ◽  
Jianbin Luo
Keyword(s):  
Direct Observation ◽  
Point Contact ◽  
Contact Geometry ◽  
Solid Surfaces ◽  
Emulsion Droplets ◽  
Oil In Water

We demonstrate a direct observation of the oil-in-water (O/W) emulsion droplets in a confined point contact geometry, to shed new light on the mechanism of the interaction between emulsion and solid surfaces under confinement.

Direct Observation of Splitting in Oil-In-Water-In-Oil Emulsion Droplets via a Microchannel Mimicking Membrane Pores

Langmuir ◽  
2017 ◽  
Vol 33 (49) ◽  
pp. 14087-14092 ◽  
Author(s):  
Kazuki Akamatsu ◽  
Koki Minezaki ◽  
Masumi Yamada ◽  
Minoru Seki ◽  
Shin-ichi Nakao
Keyword(s):  
Direct Observation ◽  
Oil Emulsion ◽  
Membrane Pores ◽  
Emulsion Droplets ◽  
Oil In Water ◽  
Water In Oil Emulsion

Direct observation of adhesion and spreading of emulsion droplets at solid surfaces

Soft Matter ◽  
2008 ◽  
Vol 4 (5) ◽  
pp. 1079 ◽  
Author(s):  
Diane M. Dresselhuis ◽  
George A. van Aken ◽  
Els H. A. de Hoog ◽  
Martien A. Cohen Stuart
Keyword(s):  
Direct Observation ◽  
Solid Surfaces ◽  
Emulsion Droplets

scholarly journals An Oligoimide Particle as a Pickering Emulsion Stabilizer

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1071 ◽  
Author(s):  
Yu-Jin Cho ◽  
Dong-Min Kim ◽  
In-Ho Song ◽  
Ju-Young Choi ◽  
Seung-Won Jin ◽  
...  
Keyword(s):  
Particle Concentration ◽  
Pickering Emulsion ◽  
Pickering Emulsions ◽  
Step Method ◽  
Wetting Properties ◽  
Emulsion Droplets ◽  
Step Procedure ◽  
Oil In Water ◽  
One Step ◽  
Oil Emulsions

A pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA)-based oligoimide (PMDA-ODA) was synthesized by a one-step procedure using water as a solvent. The PMDA-ODA particles showed excellent partial wetting properties and were stably dispersed in both water and oil phases. A stable dispersion was not obtained with comparison PMDA-ODA particles that were synthesized by a conventional two-step method using an organic solvent. Both oil-in-water and water-in-oil Pickering emulsions were prepared using the oligoimide particles synthesized in water, and the size of the emulsion droplet was controlled based on the oligoimide particle concentration. The oligoimide particles were tested to prepare Pickering emulsions using various kinds of oils. The oil-in-water Pickering emulsions were successfully applied to prepare microcapsules of the emulsion droplets. Our new Pickering emulsion stabilizer has the advantages of easy synthesis, no need for surface modification, and the capability of stabilizing both oil-in-water and water-in-oil emulsions.

Pore-Scale Transport Mechanisms and Macroscopic Displacement Effects of In-Situ Oil-in-Water Emulsions in Porous Media

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Chuan Lu ◽  
Wei Zhao ◽  
Yongge Liu ◽  
Xiaohu Dong
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Mobility Control ◽  
Pore Scale ◽  
Sweep Efficiency ◽  
Emulsion Droplets ◽  
Oil In Water ◽  
Retention Volumes

Oil-in-water (O/W) emulsions are expected to be formed in the process of surfactant flooding for heavy oil reservoirs in order to strengthen the fluidity of heavy oil and enhance oil recovery. However, there is still a lack of detailed understanding of mechanisms and effects involved in the flow of O/W emulsions in porous media. In this study, a pore-scale transparent model packed with glass beads was first used to investigate the transport and retention mechanisms of in situ generated O/W emulsions. Then, a double-sandpack model with different permeabilities was used to further study the effect of in situ formed O/W emulsions on the improvement of sweep efficiency and oil recovery. The pore-scale visualization experiment presented an in situ emulsification process. The in situ formed O/W emulsions could absorb to the surface of pore-throats, and plug pore-throats through mechanisms of capture-plugging (by a single emulsion droplet) and superposition-plugging or annulus-plugging (by multiple emulsion droplets). The double-sandpack experiments proved that the in situ formed O/W emulsion droplets were beneficial for the mobility control in the high permeability sandpack and the oil recovery enhancement in the low permeability sandpack. The size distribution of the produced emulsions proved that larger pressures were capable to displace larger O/W emulsion droplets out of the pore-throat and reduce their retention volumes.

ChemInform Abstract: The Synthesis of Chiral Isotetronic Acids with Amphiphilic Imidazole/Pyrrolidine Catalysts Assembled in Oil-in-Water Emulsion Droplets.

ChemInform ◽  
2013 ◽  
Vol 44 (20) ◽  
pp. no-no
Author(s):  
Boyu Zhang ◽  
Zongxuan Jiang ◽  
Xin Zhou ◽  
Shengmei Lu ◽  
Jun Li ◽  
...  
Keyword(s):  
Water Emulsion ◽  
Emulsion Droplets ◽  
Oil In Water ◽  
Oil In Water Emulsion

The Synthesis of Chiral Isotetronic Acids with Amphiphilic Imidazole/Pyrrolidine Catalysts Assembled in Oil-in-Water Emulsion Droplets

2012 ◽  
Vol 124 (52) ◽  
pp. 13336-13339 ◽  
Author(s):  
Boyu Zhang ◽  
Zongxuan Jiang ◽  
Xin Zhou ◽  
Shengmei Lu ◽  
Jun Li ◽  
...  
Keyword(s):  
Water Emulsion ◽  
Emulsion Droplets ◽  
Oil In Water ◽  
Oil In Water Emulsion
Sign in / Sign up

Export Citation Format

Share Document