Showing papers in "Journal of Colloid and Interface Science in 1978"

TL;DR: In this article, a method for determination of intrinsic ionization and complexation constants of oxide surface sites from potentiometric titration data is reported using these experimental properties and the stoichiometry of surface reactions, surface charge, σo, adsorption density, Γi, and diffuse layer potentials, ψd, at the oxide/water interface.

TL;DR: In this paper, the site-binding model for the electrical double layer of hydrous oxides reported in a previous paper is applied to the adsorption of metal ions from dilute solution and to complex heterogeneous systems, i.e., amorphous iron oxyhydroxide.

TL;DR: In this paper, the effects of such parameters as preparation technique, pH, and sodium chloride concentration on the electrophoretic mobility of sodium kaolinite are examined using the single-particle microelectrophoresis technique.

TL;DR: In this paper, a thermodynamic treatment has been developed on the basis of the interfacial excess quantity defined by Hansen [J Phys Chem 66, 410 (1962)] and of the quasithermodynamics.

TL;DR: In this paper, Fourier transform infrared spectroscopy has been used to study the interface between silane coupling agents and glass surfaces on the molecular level using high specific surface area fumed silica (CabO-Sil) was used.

TL;DR: In this paper, the adsorption of human albumin to polyethylene was studied using radioiodinated (125I or 131I) protein, and the existence of a dynamic equilibrium with equal rates of adaption and desorption was established.

TL;DR: Kerker et al. as discussed by the authors determined the variation of surface tension with pressure for water in equilibrium with compressed methane, ethylene, ethane, normal butane, isobutane and carbon dioxide at temperatures between 0 and 50°C using the capillary rise method.

TL;DR: In this article, it was shown that the circular dichroism (CD) spectrum of a suspension of such particles, arbitrarily oriented but with the restriction that their axes lie in a plane perpendicular to the incident beam, is equal to the intrinsic CD spectrum modified by a "solvent factor" which depends upon the average refractive index of the cylinder relative to that of the surrounding medium.

TL;DR: In this article, a theory for the electrical conductivity of a polyhedral foam of sufficiently low bulk density as to conduct effectively only through a random lattice of very narrow Plateau borders was developed.

TL;DR: In this article, light scattering of solutions and electron microscopy of carbon replicas from freeze-fractured samples were used to determine association structures in W/O microemulsions.

TL;DR: In this article, the authors studied the kinetics of a coagulation process in a finite system of particles placed in a volume V and derived an equation governing the time evolution of the probability W ( Q, t ) of finding in the system a given mass spectrum Q = { n 1, n 2, …, n g, …}, where n g is the number of particles containing g monomers.

TL;DR: In this paper, the titration behavior of adsorbed RNase and HPA was investigated and it was shown that the carboxyl groups of HPA tend to accumulate close to the negatively charged polystyrene surface, probably due to ion-pair formation with negatively charged sulfate groups at the latex surface.

TL;DR: In this paper, the enthalpy change resulting from the adsorption of human plasma albumin and bovine pancreas ribonuclease on polystyrene latices was investigated.

TL;DR: In this article, an exact solution for the zero-thickness disk interfacial viscometer was obtained from a measurement of the torque required to hold the disk stationary when the dish rotates at a given angular velocity.

TL;DR: In this paper, the apparent molal volumes and the isentropic apparentmolal compressibilities have been evaluated at concentrations above and below the critical micelle concentration (CMC).

TL;DR: In this article, the conformation of γ-globulin adsorbed on monodisperse polystyrene latices and the subsequent rates of flocculation of the latices, have been carried out in situ using quasielastic light scattering.

TL;DR: Norde et al. as mentioned in this paper found that upon adsorption at low pH negative charge is absorbed, whereas at high pH positive charge is taken up, and the extent to which this happens is estimated by analyzing electrophoretic mobilities of all particles involved.

TL;DR: In this article, the intramicellar solubility of compressed He, O 2, Ar, CH 4, and C 2 H 6 in aqueous solutions of sodium dodecylsulfate (SDS) and cetyltrimethylammonium bromide (CTAB) using a simple manometric technique was determined.

TL;DR: In this article, the system of thermodynamic fundamental equations for bulk phases and interfaces has been studied within the frames of the completely elastic solid model, and the dependence of surface properties on strains has been considered.

TL;DR: In this article, a three-layer model was developed for the adsorbed proteins and the charge and potential distribution over these layers was computed based on experimental data, and the results showed that there is a tendency for cations to accumulate in the contact region between latex and protein, whereas anions tend to remain at the aqueous periphery.

TL;DR: In this article, a Poisson-Boltzmann equation with hydration forces acting on the ions in an interface is derived with the main differences from the Gouy-Chapman theory are the following: lowering of the surface ion concentrations; breaking of the linear connection between the surface charge and the surface electrical field; bending of the differential capacity curves of the double layer; separating in adsorptions of the ion species of the univalent polyelectrolyte.

TL;DR: In this paper, an analysis of the thermodynamics of thin liquid (soap) films is given in terms of a three-dimensional film description in which the film is thought to consist of a homogeneous volume phase bounded by two Gibbs dividing surfaces.

TL;DR: In this article, the aging process may be divided into two stages: (a) hydrolysis, polymerization leading to oxolation, nucleation, and growth to small particles (∼40 A) (b) aggregation to larger particles (200−500 A), and anisotropic flocculation to linear chains followed by slow sedimentation.

TL;DR: In this article, a linear relation between the carbon number of the alcohols and the slope of the micelle concentration decrease with alcohol concentration was found to relate linearly to ΔGp° for the standard free energy change of penetration of alcohol from the aqueous to the micellar phases.

TL;DR: In this article, a comparison of the adsorption, at 5, 25, 37, and 50°C, of polyvinyl alcohol (PVA) on polystyrene latex particles from water has been made, in terms of adsorbed amount (Γ) and thickness (δ), for various PVA molecular weight fractions (13,600 to 65,100).

TL;DR: In this paper, a theoretical model for the rate of bubble nucleation is developed that is valid for any binary liquid-liquid system, and the maximum superheat limits of emulsions containing 83% by volume hydrocarbon (benzene, ndecane, n-dodecane and n-hexadecane), 15% water and 2% surfactant were measured experimentally at 1 atm.

TL;DR: The experimental titration curve (pH vs OH/Al) for acidified Al(III) solutions in the presence of sulfate ions differs from that measured in nitrate solutions.

TL;DR: In this paper, an experimental arrangement was described for the determination of the electrophoretic mobility of suspended particles as a function of particle size, where sedimenting between plane vertical electrodes was deflected to and fro by short rectangular field pulses.

TL;DR: In this paper, the sedimentation potential of argon gas bubbles in aqueous solutions of sodium hexadecyl sulfate (SHS) and hexadecyltrimethylammonium bromide (HTAB) was measured under various conditions.