scholarly journals Destabilization and phase separation of particle suspensions in emulsions

Soft Matter ◽  
2020 ◽  
Vol 16 (47) ◽  
pp. 10697-10706
Author(s):  
Blandine Feneuil ◽  
Atle Jensen ◽  
Andreas Carlson
Keyword(s):  
Phase Separation ◽  
Continuous Phase ◽  
Particle Suspensions

The presence of particles in an emulsion affects the drainage direction and velocity of the continuous phase. We observe experimentally and numerically that particles can either stabilize the emulsion or enhance drainage.

scholarly journals Phase Separation Behavior and System Properties of Aqueous Two-Phase Systems with Polyethylene Glycol and Different Salts: Experiment and Correlation

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Haihua Yuan ◽  
Yang Liu ◽  
Wanqian Wei ◽  
Yongjie Zhao
Keyword(s):  
Phase Separation ◽  
Sodium Citrate ◽  
Line Length ◽  
Continuous Phase ◽  
Two Phase ◽  
Separation Rate ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
System Properties ◽  
Tie Line

The phase separation behaviors of PEG1000/sodium citrate, PEG4000/sodium citrate, PEG1000/ammonium sulfate, and PEG4000/ammonium sulfate aqueous two-phase systems were investigated, respectively. There are two distinct situations for the phase separation rate in the investigated aqueous two-phase systems: one state is top-continuous phase with slow phase separation rate and strong bottom-continuous phase with fast phase separation rate and weak volume ratio dependence. The system properties such as density, viscosity, and interfacial tension between top and bottom phases which have effects on the phase separation rate of aqueous two-phase systems were measured. The property parameter differences between the two phases increased with increasing tie line length and then improved the phase separation rate. Moreover, a modified correlation equation including the phase separation rate, tie line length, and physical properties of the four aqueous two-phase systems has been proposed and successfully tested in the bottom-continuous phase, whose coefficients were estimated through regression analysis. The predicted results of PEG1000/sodium citrate aqueous two-phase systems were verified through the stationary phase retention in the cross-axis countercurrent chromatography.

scholarly journals Phase separation and rotor self-assembly in active particle suspensions

2012 ◽  
Vol 109 (11) ◽  
pp. 4052-4057 ◽  
Author(s):  
J. Schwarz-Linek ◽  
C. Valeriani ◽  
A. Cacciuto ◽  
M. E. Cates ◽  
D. Marenduzzo ◽  
...  
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Active Particle ◽  
Particle Suspensions

Spinodal Decomposition in Fe-Cr-Co Alloys

1982 ◽  
Vol 21 ◽  
Author(s):  
S. S. Brenner ◽  
P. P. Camus ◽  
M. K. Miller ◽  
W. A. Soffa
Keyword(s):  
Phase Separation ◽  
Spinodal Decomposition ◽  
Atom Probe ◽  
Continuous Phase ◽  
Miscibility Gap ◽  
Two Phase ◽  
Probe Field ◽  
Long Wavelength ◽  
Composition Fluctuations ◽  
Kinetics Of

Continuous phase separation or spinodal decomposition occurs within a miscibility gap through the selective amplification of long wavelength concentration waves to produce a two-phase modulated microstructure. To comprehensively study the formation of these modulated microstructures and the kinetics of continuous phase separation the behavior of the composition fluctuations in the decomposing material should be monitored directly. The atom probe field-ion microscope is an ideal instrument for this type of investigation of fine-scale microstructures because of its ultra-high spatial resolution and microchemical analysis capability.

Instantaneous Phase Separation at the Contact Surface in Compression Molding of Immiscible Polymer Blend

2010 ◽  
Author(s):  
Wei Zhang ◽  
Min Li ◽  
Sarang Deodhar ◽  
Donggang Yao ◽  
Jack G. Zhou
Keyword(s):  
Phase Separation ◽  
Compression Ratio ◽  
Contact Surface ◽  
Phase Structure ◽  
Compression Molding ◽  
Continuous Phase ◽  
Structure Evolution ◽  
Compression Rate ◽  
Mold Surface ◽  
Immiscible Polymer

Immiscible polymer blends with a co-continuous phase structure (CPS) can yield synergistic material properties. In this study, a 50/50 wt% PLA/PS blend with CPS was used as a model system to explore the influence of compression molding conditions (including compression rate, compression ratio, and mold surface characteristics) on the final phase structure of the molded part. The microscopic characterization clearly demonstrated the instantaneous formation of a PLA rich layer at the mold contact surface when a high compression ratio and fast compression rate were applied during molding. CFD simulations were performed to numerically study the effects of compression on phase structure evolution in binary blends. If harnessed appropriately, this phase separation process may be utilized for creating innovative material structures.

Colloidal ordering from phase separation in a liquid- crystalline continuous phase

Nature ◽  
2000 ◽  
Vol 407 (6804) ◽  
pp. 611-613 ◽  
Author(s):  
Jean-Christophe Loudet ◽  
Philippe Barois ◽  
Philippe Poulin
Keyword(s):  
Phase Separation ◽  
Liquid Crystalline ◽  
Continuous Phase

Continuous phase separation in a Nickel-Aluminium alloy

1982 ◽  
Vol 30 (12) ◽  
pp. 2219-2225 ◽  
Author(s):  
S.A. Hill ◽  
B. Ralph
Keyword(s):  
Phase Separation ◽  
Aluminium Alloy ◽  
Continuous Phase

scholarly journals A method of continuous phase separation of water in oil emulsion by applying D.C. electric field.

1985 ◽  
Vol 11 (6) ◽  
pp. 729-734 ◽  
Author(s):  
Manabu Yamaguchi ◽  
Atsushi Kobayashi ◽  
Kohzi Ohbori ◽  
Takashi Katayama
Keyword(s):  
Phase Separation ◽  
Electric Field ◽  
Continuous Phase ◽  
Oil Emulsion ◽  
Water In Oil Emulsion

scholarly journals Tailoring hydrogel microstructure via phase separation and kinetic trapping

2021 ◽  
Author(s):  
Simon Vieth
Keyword(s):  
Phase Separation ◽  
Drug Release ◽  
Controlled Drug Release ◽  
Continuous Phase ◽  
The Other ◽  
Phase Iii ◽  
Droplet Growth ◽  
Aqueous Mixtures ◽  
Kinetic Trapping ◽  
Over Time

Control of the microstructure of a biopolymeric phase-separated system is presented as part of an effort to develop a novel platform for controlled drug release. Under certain conditions, aqueous mixtures of biopolymers exhibit thermodynamic incompatibility and separate into distinct phases, each concentrated in one component and poor in the other. Upon initiation of phase separation (PS), droplets of one phase, the included phase, appear and ripen over time such that shared surface area with the continuous phase is minimized. Gelation is a means of halting droplet growth prior to bulk PS (BPS). The purpose of this research is to establish the means to dictate the microstructure of a PS system by: (i) understanding the effects of biopolymer concentration on PS temperature, TPS; (ii) modeling the growth of droplets within the included-phase; (iii) examining the efficacy of gelation as a means of trapping microstructure and (iv) investigating the characteristic microstructures of biopolymer systems undergoing a two-step temperature quench.

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