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You searched for: Journal name Colloids and surfaces Remove constraint Journal name: Colloids and surfaces Publication year rev 7989-2011 Remove constraint Publication year rev: 7989-2011 Source 2011 v.382 no.1-3 Remove constraint Source: 2011 v.382 no.1-3
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1. Binding of d-mannose-containing glycoproteins to d-mannose-specific lectins studied by surface plasmon resonance

Author:
Jaroslav Katrlík; Rostislav Škrabana; Danica Mislovičová; Peter Gemeiner
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 198-202
ISSN:
0927-7757
Subject:
Lens culinaris; agglutinins; albumins; beta-fructofuranosidase; binding sites; colloids; concanavalin A; dissociation; glucan 1,4-alpha-glucosidase; glucose oxidase; glycoproteins; gold; models; polysaccharides; surface plasmon resonance; transferrin
Abstract:
... Binding of selected glycoproteins containing α-d-mannose sites (invertase, glucoamylase, transferrin, glucose oxidase, and albumin α-d-mannopyranosylphenyl isothiocyanate) with two lectins selective for α-d-mannose branching glycans, concanavalin A (ConA), and Lens culinaris agglutinin (LCA) was studied on lectin biochips by microfluidic surface plasmon resonance (SPR). Lectin-containing biochips ...
DOI:
10.1016/j.colsurfa.2011.01.020

2. Colloidal particles that make smart polymer composites deform and rotate

Author:
Miklós Zrínyi
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 192-197
ISSN:
0927-7757
Subject:
biomimetics; colloids; electric field; energy; gels; locomotion; magnetic fields; magnetic properties; polymers; rheological properties
Abstract:
... All particles experience forces and torques when subjected to electric and/or magnetic fields. Especially strong field-particle interactions characterize colloidal particles showing dielectric- and magnetic properties. In the presence of magnetic- and/or electric field, dielectrophoretic- and magnetophoretic forces and torques acting on particles result in locomotion and structure formation. If th ...
DOI:
10.1016/j.colsurfa.2011.01.047

3. Foaming activity of lupin protein isolates in the absence of insoluble protein aggregates

Author:
T.D. Karapantsios; V.T. Papoti; G. Doxastakis
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 74-80
ISSN:
0927-7757
Subject:
Lupinus; aqueous solutions; chemical precipitation; colloids; drainage; electrical conductivity; foaming; foaming properties; foams; pH; protein aggregates; protein isolates; sodium chloride; ultrafiltration; whipping; xanthan gum
Abstract:
... This study investigates the foaming properties of two lupin protein isolates (LPIs) extracted by ultrafiltration (albumin-rich fraction; LPTF) and isoelectric precipitation (globulin-rich fraction; LPTE), respectively. An earlier work on LPIs extracted by similar methods, Alamanou and Doxastakis [1], blamed the insoluble protein aggregates for the worse foamability and foam stability of the LPTE i ...
DOI:
10.1016/j.colsurfa.2010.11.025

4. Long range topological correlations in cellular patterns

Author:
C. Oguey
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 32-35
ISSN:
0927-7757
Subject:
colloids; foams; screening; topology
Abstract:
... In random 2D cellular assemblies, maximum entropy inference yields a specific form for the topological pair correlation, bi-affine in the cell charges (6-polygonality). By a self-consistent method, we show that the long distance behaviour of the pair correlation function is related to sum rules involving moments of the quadratic coefficients of the bi-affine form. The correlation function is predi ...
DOI:
10.1016/j.colsurfa.2011.02.017

5. Reprint of “Properties of microemulsions with mixed nonionic surfactants and citrus oil”

Author:
Monzer Fanun
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 226-231
ISSN:
0927-7757
Subject:
Citrus; X-radiation; activation energy; colloids; electrical conductivity; energy; hydrodynamics; light scattering; mixing; nonionic surfactants; oils; periodicity; propylene glycol; solubilization; sucrose; temperature; water content
Abstract:
... Water/propylene glycol/sucrose laurate/ethoxylated mono-di-glyceride/citrus oil microemulsion systems were formulated and characterized using electrical conductivity, dynamic light scattering, and small angle X-ray scattering. The solubilization capacity of water in the oil is dependent on the surfactants mixing ratio (w/w). The free energy of solubilization (ΔGₛ ᵒ) for water-in-oil microemulsions ...
DOI:
10.1016/j.colsurfa.2011.04.020

6. Size dependent brittle to ductile transition in bubble rafts

Author:
Michael Arciniaga; Chin-Chang Kuo; Michael Dennin
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 36-41
ISSN:
0927-7757
Subject:
colloids; foams; plastic deformation; viscoelasticity
Abstract:
... We report on experimental studies of the failure modes of aqueous foam under tension as a function of loading speed and system size. Foam is an example of a viscoelastic material that acts either as a solid or a fluid, depending on the details of the applied deformation. This raises the interesting question of whether foam's failure modes correspond to plastic deformation, viscous flow, or brittle ...
DOI:
10.1016/j.colsurfa.2010.12.018

7. Thermal properties of non-crystallizable oil-in-water highly concentrated emulsions

Author:
A. Jamil; S. Caubet; B. Grassl; T. Kousksou; K. El Omari; Y. Zeraouli; Y. Le Guer
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 266-273
ISSN:
0927-7757
Subject:
castor oil; colloids; differential scanning calorimetry; droplets; emulsifying; emulsions; energy; mixing; nonionic surfactants; specific heat; supercooling; viscosity
Abstract:
... In this work, a differential-scanning-calorimetry (DSC) technique is applied to studying the thermal properties of highly concentrated oil-in-water (O/W) emulsions of two immiscible liquids (castor oil and water) with high viscosity ratios (3400/1 for O/W), similar densities (0.974/1 for O/W) and stabilized by a non-ionic surfactant. A low-energy mixing process was used to produce highly concentra ...
DOI:
10.1016/j.colsurfa.2010.12.006

8. Viscous froth simulations with surfactant mass transfer and Marangoni effects: Deviations from Plateau's rules

Author:
B. Embley; P. Grassia
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 8-17
ISSN:
0927-7757
Subject:
bubbles; colloids; combs (social insects); energy; foams; glass; mass transfer; models; surfactants; topology
Abstract:
... The viscous froth model is a rheological model for dry, “two-dimensional” foams, such as a monolayer of bubbles confined between two glass plates. The model is typically out of mechanical equilibrium due to viscous dissipation by drag along the confining plates. By introducing variable local surfactant coverages and variable local surface tensions, we modify the model such that, in addition to bei ...
DOI:
10.1016/j.colsurfa.2011.01.013

9. “Reprint of Numerical simulation of multi-component mass transfer in rigid or circulating drops: Multi-component effects even in the presence of weak coupling”

Author:
S. Ubal; P. Grassia; C.H. Harrison; W.J. Korchinsky
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 251-260
ISSN:
0927-7757
Subject:
colloids; diffusivity; liquid-liquid extraction; mass transfer; mathematical models; solutes
Abstract:
... Numerical simulation results of mass transfer to and from drops with applications to liquid–liquid extraction processes are considered. Multiple solute components (specifically 2 solute components) are assumed to be present in the drop. The system is described using the theory of multi-component mass transfer, in which a flux of one component can be coupled to a concentration gradient in the other ...
DOI:
10.1016/j.colsurfa.2011.04.021

10. A new device for assessing film stability in foams: Experiment and theory

Author:
M. Kostoglou; E. Georgiou; T.D. Karapantsios
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 64-73
ISSN:
0927-7757
Subject:
aqueous solutions; colloids; drainage; electrical resistance; electrodes; foams; models; monitoring
Abstract:
... A new device is proposed for registering thin film drainage around a single foam bubble based on the increase of the electrical resistance of the draining film. Initially, a small bubble is expanded inside an electrically conductive liquid bridge that is formed between two vertically aligned metallic electrodes. Then the liquid of the bridge is withdrawn at a pre-selected flow rate until rupture o ...
DOI:
10.1016/j.colsurfa.2010.12.028

11. Characterisation, modification and mathematical modelling of sudsing

Author:
L. Ran; S.A. Jones; B. Embley; M.M. Tong; P.R. Garrett; S.J. Cox; P. Grassia; S.J. Neethling
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 50-57
ISSN:
0927-7757
Subject:
anionic surfactants; calcium; colloids; foaming; foams; laundry; mathematical models; pH; physical chemistry; rheometry; shrinkage; soil; triolein
Abstract:
... A programme of research is outlined which considers the foaming performance and foam behaviour of surfactant systems commonly encountered in hand-wash laundry detergent applications. An experimental study of the physical chemistry of foam generation indicates that precipitation of a typical anionic surfactant with calcium forms mesophase particles and causes a marked reduction in the rate of trans ...
DOI:
10.1016/j.colsurfa.2010.11.028

12. Drainage and stability of 2D foams: Foam behaviour in vertical Hele-Shaw cells

Author:
M. Tong; K. Cole; S.J. Neethling
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 42-49
ISSN:
0927-7757
Subject:
bubbles; colloids; drainage; equations; foams; image analysis; mathematical models; prediction
Abstract:
... An integrated numerical model was developed to predict the spatial and temporal evolution of the bubble size distribution within foams. In order to validate the modelling, experiments in a vertical pseudo-2D Hele-Shaw cell were carried out since the bubble size distribution in this system can be readily measured. The model combines a population balance sub-model for predicting the bubble size with ...
DOI:
10.1016/j.colsurfa.2010.11.007

13. Drainage of foam films stabilized by n-dodecyl-β-d-maltoside or dodecyl trimethylammonium bromide and their mixtures

Author:
D.S. Ivanova; Zh.K. Angarska; S.I. Karakashev; E.D. Manev
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 93-101
ISSN:
0927-7757
Subject:
adsorption; aqueous solutions; colloids; drainage; electrolytes; equations; foams; surface tension; surfactants
Abstract:
... The thinning of foam films from aqueous solutions of single non-ionic- [n-dodecyl-β-d-maltoside (β-C₁₂G₂)] and ionic-[dodecyl trimethylammonium bromide (C₁₂TAB)] surfactants, as well as of their mixtures at Cₜ=CMC, was studied at different molar ratios (50:1; 1:1; 1:50), with or without additional electrolyte (0.1M NaBr). The equilibrium surface tension isotherm of the mixture β-C₁₂G₂:C₁₂TAB=1:50 ...
DOI:
10.1016/j.colsurfa.2011.01.058

14. Dynamic interfacial tensions of dietary oils

Author:
K. Dopierala; A. Javadi; J. Krägel; K.-H. Schano; E.P. Kalogianni; M.E. Leser; R. Miller
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 261-265
ISSN:
0927-7757
Subject:
biosurfactants; colloids; dietary fat; digestion; frying; oils; surface tension
Abstract:
... For the characterisation of dietary oils various parameters are used. Although many applications in food technology, and also the process of fat digestion are controlled by interfacial properties, only very rarely interfacial properties are investigated. However, the interfacial tension and in particular its dynamics are very sensitive to the quality of an oil. We show that the short time dynamic ...
DOI:
10.1016/j.colsurfa.2010.11.027

15. Dynamics of free liquid films during formation of polymer foams

Author:
Tatiana Gambaryan-Roisman
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 113-117
ISSN:
0927-7757
Subject:
bubbles; colloids; equations; foams; melting; models; polymers; rheology; viscoelasticity
Abstract:
... Determination of thinning rates of free liquid films is important for many applications involving formation and stability of foams. One of examples is self-foaming of polymer melts. The morphology of the resulting foam is governed by the thinning rates of interbubble films and by the thinning rates of free films separating the bubbles from the ambient gas. The film thinning dynamics depends on the ...
DOI:
10.1016/j.colsurfa.2011.02.040

16. Effects of oppositely charged surfactants on the stability of foam films

Author:
Nora Kristen-Hochrein; Natascha Schelero; Regine von Klitzing
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 165-173
ISSN:
0927-7757
Subject:
anionic surfactants; bromides; colloids; foams; hydrophilicity; hydrophobicity; sodium; styrene
Abstract:
... The present work deals with the influence of different anionic surfactants on the properties of foam films from mixtures of oppositely charged surfactants. For this purpose foam films are formed from 10⁻⁴M cationic alkyl trimethylammonium bromides (CₙTAB) and variable amounts of the anionic surfactants sodium decanoate, sodium sulfonate and sodium styrene sulfonate, respectively, are investigated. ...
DOI:
10.1016/j.colsurfa.2010.12.019

17. Electrohydrodynamic preparation of particles, capsules and bubbles for biomedical engineering applications

Author:
Marjan Enayati; Ming-Wei Chang; Felix Bragman; Mohan Edirisinghe; Eleanor Stride
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 154-164
ISSN:
0927-7757
Subject:
DNA; antibiotics; bioactive properties; bubbles; colloids; droplets; drugs; encapsulation; enzymes; instrumentation; nanocarriers; proteins
Abstract:
... Electrohydrodynamic (EHD) processing is a method of generating liquid droplets through the application of a large electrical potential difference. It has a wide range of applications in both industrial processes and analytical instrumentation. Research carried out over the last decade has greatly increased the capabilities of EHD processing, providing the capability to coat, print, spin, thread, b ...
DOI:
10.1016/j.colsurfa.2010.11.038

18. Experimental and FEM analysis of the material response of porous metals imposed to mechanical loading

Author:
N. Michailidis; F. Stergioudi; H. Omar; D. Papadopoulos; D.N. Tsipas
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 124-131
ISSN:
0927-7757
Subject:
aluminum; cell structures; colloids; computed tomography; deformation; finite element analysis; foams; mechanical properties; nickel; scanning electron microscopy
Abstract:
... The mechanical behaviour of cellular structures is governed by their internal architecture. Therefore, it is of interest to incorporate a quantitative description of actual three-dimensional microstructures in the mechanical analysis of materials. In this contribution, an experimental-computational methodology has been developed to facilitate finite element method simulations of complex three-dime ...
DOI:
10.1016/j.colsurfa.2010.12.017

19. FOCUS: Foam evolution and stability in microgravity

Author:
Béla M. Somosvári; Pál Bárczy; János Szóke; Péter Szirovicza; Tamás Bárczy
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 58-63
ISSN:
0927-7757
Subject:
colloids; foaming; foams; microgravity; nanoparticles; silica
Abstract:
... Foam Casting and Utilization in Space (FOCUS, Project ID: SURE AO-019) is an industrial materials science experiment to create foams containing particles in microgravity using a special foam generator (FG). Scientific objective is to optimize the foaming parameters in order to achieve homogeneous bubble size independently of gravity and the direction of foaming. FOCUS Experiment was executed on bo ...
DOI:
10.1016/j.colsurfa.2011.01.035

20. Foam films from mixed solutions of bovine serum albumin and n-dodecyl-β-d-maltoside

Author:
Zh. K. Angarska; A.A. Elenskyi; G.P. Yampolskaya; K.D. Tachev
Source:
Colloids and surfaces 2011 v.382 no.1-3 pp. 102-112
ISSN:
0927-7757
Subject:
adsorption; aqueous solutions; bovine serum albumin; colloids; foams; hydrodynamics; nonionic surfactants; surface tension
Abstract:
... New data for foam films from mixed aqueous solutions of important components non-ionic surfactant “n-dodecyl-β-d-maltoside” (C₁₂G₂) and globular protein “bovine serum albumin” (BSA) are presented. Based on the equilibrium surface tension isotherm of mixed aqueous solutions of BSA (10⁻⁶M) with C₁₂G₂, obtained by Wilhelmy method it is found that protein–surfactant complexes are formed at concentrati ...
DOI:
10.1016/j.colsurfa.2011.01.002