Showing papers in "Journal of Colloid and Interface Science in 1979"

TL;DR: In this paper, the rates of change of film pressure (π) and surface concentration (Γ) of protein during adsorption of β-casein, bovine serum albumin (BSA), and lysozyme at the air-water interface have been monitored by the Wilhelmy plate and surface radioactivity methods, respectively.

TL;DR: In this paper, a middle-phase microemulsion model is introduced that consists of alternating thin layers of oil and brine containing surfactant molecules oriented at each planar interface according to their amphiphilic character.

TL;DR: Adsorption isotherms for the three proteins β-casein, bovine serum albumin, and lysozyme at the air-water and oil-water interfaces have been determined independently using ellipsometry and surface radioactivity methods; the surface pressure and surface potential were also monitored as mentioned in this paper.

TL;DR: In this article, a set of experimental reference isotherms, corresponding to definite ranges of the C BET constant value between 20 and about 3000, is proposed, which are very well fitted by the n-layers-BET equation, with n nearly equal to 4.

TL;DR: In this paper, a correlation is suggested for available experimental measurements of the advancing dynamic contact angle measured through the liquid phase during the displacement of a liquid-gas interface through a glass capillary tube.

TL;DR: In this paper, it was shown that the contact angle formed by a drop of liquid varies with drop size, below a critical diameter which is probably a function of the nonuniformity of the solid surface.

TL;DR: The adsorption of water vapor on smooth crystalline quartz at pressures close to saturation has been determined by ellipsometry, particular attention being paid to excluding gel layers and contamination as discussed by the authors.

TL;DR: In this paper, the effect of substrate critical surface tension on the rate of microbiological attachment to solid surfaces immersed in natural seawater is considered and a model based on interfacial tension and the work of Good and co-workers is presented which accounts for the presence of both types of behavior.

TL;DR: The detailed motions of individual human red blood cells (rbc) were studied under the microscope in transparent suspensions of red cell ghosts by tracking the particles in flow through tubes having radii R0 of 32 to 80 μm at Reynolds numbers from 10−3 to 0.3, and volume concentrations c from 0.10 to0.93.

TL;DR: In this article, a thermodynamic analysis is given to unravel the various subprocesses that contribute to protein adsorption, taking the humans plasma albumin and bovine pancreas ribonuclease (RNase) on negatively charged polystyrene latices as the examples.

TL;DR: In this paper, the authors derived expressions relating the geometric and thermodynamic properties of highly concentrated, monodisperse emulsions to the volume fraction of the dispersed phase for the model of infinitely long cylindrical drops.

TL;DR: In this article, the dispersion and polar components of the hydrated solid surface free energy and the solid-water interfacial free energy were derived for poly(hydroxyethyl methacrylate-methoxyethyl methACrylate) copolymers of varying composition and equilibrium water contents.

TL;DR: In this paper, the isotherms of some hydrocarbons on cotton cellulose paper and on thermomechanical pulp fibers were determined by a gas chromatographic technique.

TL;DR: The surface tension of aqueous solutions of a range of ABA polyoxyethylene-polyoxypropylene nonionic copolymers has been measured over a wide range of concentrations.

TL;DR: In this paper, a mathematical model of the liquid-like layer that exists between ice and a substrate is developed and used to show the relationship between two problems in which a foreign object moves through ice.

TL;DR: In this article, the adsorption characteristics of Cu(II) in the presence of chelating agents was investigated in the laboratory, and the results showed that the addition of Chelating Agents improved the extent of the adaption, although ligand:Cu(II)-NTA-γ-Al2O3 system.

TL;DR: In this article, a falling film generator was used to obtain spherical titanium dioxide particles with modal diameters ranging between 0.06 and 0.6 μm, which were then hydrolyzed in specially designed chambers kept at different temperatures.

TL;DR: The phase diagrams of water-cyclohexane containing 5, 10, and 20 wt% sodium 1,2-bis(2-ethylhexyloxycarbonyl)-1-ethanesulfonate (Aerosol OT, AOT) as a function of temperature were studied in this paper.

TL;DR: The grain boundaries in snow are generally unstable when the pore space is filled with liquid water (i.e., liquid-saturated snow) and the grains must be arranged in clusters to achieve local force equilibrium as discussed by the authors.

TL;DR: In this paper, the adsorption of EDTA on a well-defined hydrosol consisting of rod-like β-FeOOH particles was studied as a function of pH and temperature.

TL;DR: In this article, the adsorption of human serum albumin on precipitated stoichiometric hydroxyapatite Ca10(PO4)6(OH)2, /CaHA/ was followed in a wide pH range.

TL;DR: In this paper, the Mie equation was used to derive the complex refractive index for carbon black, which was shown to be 2.0 − 1.0i at visible wavelengths (350-1000 nm).

TL;DR: Using the lattice fluid model in conjunction with the Cahn-Hilliard theory of inhomogeneous systems, an accurate method has been developed for calculating the surface tension of nonpolar and slightly polar liquids of arbitrary molecular weight as discussed by the authors.

TL;DR: In this paper, a cylindrical Couette device with a dilute suspension of monodisperse polystyrene spheres was used to study the effects of hydrodynamic forces on stability of colloids.

TL;DR: In this paper, light scattering from aqueous NaCl solutions of dimethyldodecylamine oxide has been measured at different degrees of neutralization adjusted by addition of HCl, and molecular weights of differently charged micelles are determined from the Debye plot.

TL;DR: In this paper, the effect of impregnation by NH4F or HF solutions, followed by calcination at 600°C, provoke the same modifications of the alumina surface.

TL;DR: In this paper, the efficiency of collision between ellipsoidal particles and a spherical large droplet was calculated by simultaneously solving both the equation of translation and equation of rotation of spheroids for various initial orientations of the latter.

TL;DR: Aiken et al. as mentioned in this paper found a maximum at the CMC followed by a minimum when measuring the adsorption of sodium alkyl sulfates from aqueous solution onto cotton and wool.

TL;DR: In this article, the authors used adsorption microcalorimetry at 77 K to show that a two-dimensional fluid → solid phase change at the completion of the argon or nitrogen monolayer.