Phase Behavior in Suspensions of Highly Charged Colloids

2009 ◽  
Vol 113 (19) ◽  
pp. 6766-6774 ◽  
Author(s):  
Andrey V. Brukhno ◽  
Torbjörn Åkesson ◽  
Bo Jönsson
Keyword(s):  
Phase Behavior ◽  
Charged Colloids

Evidence of electrostatic-enhanced depletion attraction in the structural properties and phase behavior of binary charged colloidal suspensions

Soft Matter ◽  
2018 ◽  
Vol 14 (8) ◽  
pp. 1355-1364 ◽  
Author(s):  
G. J. Ojeda-Mendoza ◽  
A. Moncho-Jordá ◽  
P. González-Mozuelos ◽  
C. Haro-Pérez ◽  
L. F. Rojas-Ochoa
Keyword(s):  
Phase Behavior ◽  
Structural Properties ◽  
Charged Particles ◽  
Colloidal Suspensions ◽  
Charged Colloids ◽  
Depletion Effect

The addition of small charged particles to a dispersion of bigger charged colloids produces a depletion effect greater than that caused by the addition of neutral ones.

scholarly journals Phase behavior of charged colloids at a fluid interface

2017 ◽  
Vol 95 (2) ◽  
Author(s):  
Colm P. Kelleher ◽  
Rodrigo E. Guerra ◽  
Andrew D. Hollingsworth ◽  
Paul M. Chaikin
Keyword(s):  
Phase Behavior ◽  
Fluid Interface ◽  
Charged Colloids

scholarly journals Effect of three-body forces on the phase behavior of charged colloids

2000 ◽  
Vol 113 (8) ◽  
pp. 3360-3365 ◽  
Author(s):  
J. Z. Wu ◽  
D. Bratko ◽  
H. W. Blanch ◽  
J. M. Prausnitz
Keyword(s):  
Phase Behavior ◽  
Charged Colloids ◽  
Body Forces ◽  
Three Body

Phase behavior of cationic and anionic surfactants at low concentrations

1992 ◽  
Vol 50 (1) ◽  
pp. 694-695
Author(s):  
E. Naranjo
Keyword(s):  
Phase Behavior ◽  
Structural Characterization ◽  
Dynamic Systems ◽  
Anionic Surfactants ◽  
Intermolecular Forces ◽  
Stable Form ◽  
Surfactant Mixtures ◽  
Low Concentrations ◽  
Cationic And Anionic Surfactants ◽  
General Method

Equilibrium vesicles, those which are the stable form of aggregation and form spontaneously on mixing surfactant with water, have never been demonstrated in single component bilayers and only rarely in lipid or surfactant mixtures. Designing a simple and general method for producing spontaneous and stable vesicles depends on a better understanding of the thermodynamics of aggregation, the interplay of intermolecular forces in surfactants, and an efficient way of doing structural characterization in dynamic systems.

Sedimentation of charged colloids in the gravitational field : Relaxation toward equilibrium

2000 ◽  
Vol 10 (PR5) ◽  
pp. Pr5-109-Pr5-112
Author(s):  
J.-F. Dufrêche ◽  
J.-P. Simonin ◽  
P. Turq
Keyword(s):  
Gravitational Field ◽  
Charged Colloids

Solution Properties and Phase Behavior of Ammonium Hexylene Octyl Succinate in Water and Water-Oil System

1970 ◽  
Vol 3 (1) ◽  
Author(s):  
Md. Hamidul Kabir ◽  
Ravshan Makhkamov ◽  
Shaila Kabir
Keyword(s):  
Critical Micelle Concentration ◽  
Phase Behavior ◽  
Liquid Crystalline ◽  
Carbon Number ◽  
Phase Region ◽  
Solution Properties ◽  
Middle Phase ◽  
Two Phase ◽  
Lamellar Liquid Crystal ◽  
Drug Ingredient

The solution properties and phase behavior of ammonium hexylene octyl succinate (HOS) was investigated in water and water-oil system. The critical micelle concentration (CMC) of HOS is lower than that of anionic surfactants having same carbon number in the lipophilic part. The phase diagrams of a water/ HOS system and water/ HOS/ C10EO8/ dodecane system were also constructed. Above critical micelle concentration, the surfactant forms a normal micellar solution (Wm) at a low surfactant concentration whereas a lamellar liquid crystalline phase (La) dominates over a wide region through the formation of a two-phase region (La+W) in the binary system. The lamellar phase is arranged in the form of a biocompatible vesicle which is very significant for the drug delivery system. The surfactant tends to be hydrophilic when it is mixed with C10EO8 and a middle-phase microemulsion (D) is appeared in the water-surfactant-dodecane system where both the water and oil soluble drug ingredient can be incorporated in the form of a dispersion. Hence, mixing can tune the hydrophile-lipophile properties of the surfactant. Key words: Ammonium hexylene octyl succinate, mixed surfactant, lamellar liquid crystal, middle-phase microemulsion. Dhaka Univ. J. Pharm. Sci. Vol.3(1-2) 2004 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website

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