Journal ArticleDOI
Three-phase interactions in shear and electrical fields
S Torza,S. G. Mason +1 more
TLDR
In this article, the authors show that when two immiscible liquid drops, designated as phase-1 and -3, suspended in a third immiscibility liquid, phase-2, are brought into contact, the resulting equilibrium configuration is readily predicted from the interfacial tensions σij and spreading coefficients Si = σjk − (σij + σik).About:
This article is published in Journal of Colloid and Interface Science.The article was published on 1970-05-01. It has received 501 citations till now.read more
Citations
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Journal ArticleDOI
Interfacial Tensions of Aged Organic Aerosol Particle Mimics Using a Biphasic Microfluidic Platform
TL;DR: This work measures interfacial tension of reacting methylglyoxal, formaldehyde, and ammonium sulfate aqueous mixtures with a surrounding oil phase to infer the morphology of aged atmospheric aerosols with internal liquid-liquid phase separation, indicating a more complicated behavior of surface activity where there is competition among dissolved organics.
Journal ArticleDOI
Effects of the line tension on 3-phase liquid interactions
S. Torza,S. G. Mason +1 more
Abstract: It is shown on theoretical grounds that the line tension (or pressure) σ
123 influences both the mechanism and the final equilibrium configurations following 3-phase interaction. When σ
123 > 0 and immiscible drops (phase-1 and -3) are brought into intimate contact in a third immiscible medium (phase-2), the punctured hole in the phase-2 film has a critical size below which no interaction can occur. For σ
123 ≠ 0 the criteria of complete, partial and non-engulfing depend upon the initial radii of the interacting drops; it is shown that for drops below a critical radius b
* no contact between phase-1 and -3 can be established whatever the spreading coefficients. Furthermore the presence of σ
123 in the equilibrium equations of 3-singlets indicates the existence of two equilibrium 3s configurations, one stable and one unstable; the geometrical details have been calculated for a simplified 3-phase system. Fragmentary experimental results on a system are present from which the calculated value of σ
123 =(−0.6–6) × 10−3 dynes. More reliable methods of determining σ
123 using the principles developed here are suggested.
Journal ArticleDOI
The morphological control of anisotropic polystyrene/silica hybrid particles prepared by radiation miniemulsion polymerization
TL;DR: Novel anisotropic hybrid particles with various morphologies have been synthesized by radiation miniemulsion polymerization for the first time.
Journal ArticleDOI
Microencapsulation by coacervation of poly(lactide-co-glycolide)—II: Encapsulation of a dispersed aqueous phase
TL;DR: In this article, the phase separation of different copolyesters of lactides and glycolide solutions induced by the addition of silicone oil in order to promote microencapsulation of proteins is discussed.
Journal ArticleDOI
Delivery Systems for Low Molecular Weight Payloads: Core/Shell Capsules with Composite Coacervate/Polyurea Membranes.
TL;DR: These composite polyurea/coacervate core/shell capsules are formed by coupling associative biopolymer phase separation with interfacial polymerization and combine the excellent chemical stability of synthetic polymer barriers with the strong adhesive properties of protein‐based complex coacervates, inspired by biological underwater glues.
References
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Book
Physical chemistry of surfaces
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Journal ArticleDOI
Particle motions in sheared suspensions XII. Deformation and burst of fluid drops in shear and hyperbolic flow
F.D Rumscheidt,S. G. Mason +1 more
TL;DR: In this paper, the deformation, orientation, and burst of fluid drops suspended in a liquid subjected to both hyperbolic and shear flow have been measured for a large number of fluid pairs covering a wide range of viscosity ratio p. At low deformation excellent agreement, with theoretical equations due to Taylor and Cerf was found.
Journal ArticleDOI
Semipermeable aqueous microcapsules. I. Preparation and properties.
TL;DR: Methods have been developed for depositing thin stable semipermeable polymer membranes around aqueous microdroplets (mean diameter down to 5 μ or less) by either interfacial polymerization or interfacial coacervation.
Journal ArticleDOI
Oil Lenses on Water and the Nature of Monomolecular Expanded Films
TL;DR: In this article, the condition for the formation of such stable lenses is that the spreading coefficient FS = γ1 − γ2 γ12 shall be negative and the magnitude of the linear tension at the lens boundary is also calculated.
Journal ArticleDOI
Particle motions in sheared suspensions
W Bartok,S. G. Mason +1 more
TL;DR: In this article, the rotations executed by rigid rods, fused doublets of equal-sized spheres, and the transitory doublets formed by collision of equal sized spheres suspended in a liquid subjected to laminar shear, have been studied by making observations along the planes of shear.
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