Showing papers in "Journal of Colloid and Interface Science in 1985"

TL;DR: In this paper, a new model for the sorption of cations on metal oxides is formulated which allows for a continuum between surface reactions and precipitation, and the model can also be extended to describe cation competition and anion sorption.

TL;DR: Avnir et al. as discussed by the authors analyzed and reinterpreted previously published experimental data, revealed the following surface-fractal dimensions, all falling in the expected range 2.0 to 3.0.

TL;DR: The remarkable optical properties of metallic silver give rise not only to the brilliant colors exhibited by colloidal silver but also to a variety of other phenomena such as absorption and scattering effects, luminescence, photophoresis, and surface-enhanced Raman scattering as discussed by the authors.

TL;DR: In this article, the hydrophile-lipophile balance (HLB) plane on which the three-phase triangle is positioned in the midst of a phase diagram is defined.

TL;DR: In this paper, it was shown that the yield stress of foams and highly concentrated emulsions is given by τ 0 = 1.277 (γ/R 32 )φ 1 3 F max (φ), where γ is the interfacial tension, φ is the volume fraction of the dispersed phase, F max is the mean, dimensionless contribution to the yield stressed per drop, and R32 is the surface-volume mean drop radius.

TL;DR: In this paper, it was shown that the root mean square (rms) value of the intensity fluctuations is dependent on the scattering coefficient of the particles and the square root of their concentration.

TL;DR: Both mussels and barnacles show a preference for adhereance to which the natural cement will eventually form a stronger bond, and there remain problems in understanding why adsorbates, ubiquitously present in natural sea waters, or thick biofilms, do not appear to interfere with the tactile chemical sense.

TL;DR: In this paper, the conditions for the formation of the colloidal dispersion as well as the preparation of the pellicles, films, and membranes are reported, and some properties of the dispersion and the membranes are discussed.

TL;DR: In this paper, a theoretical treatment of colloidal systems is proposed, which takes into account the contribution of the counterions derived from the colloidal particles in screening the coulombic repulsion, leading to an effective colloid-colloid pair potential which varies with the volume fraction of the colloid particles present in the system.

TL;DR: In this article, a capillary pressure drop is created by bringing a microporous ceramic support into contact with a boehmite (γ-A1OOH) sol, which forces the dispersion medium of the sol to flow into the dry part of the support.

TL;DR: In this article, the effect of the scattering wave vector on both the intensity of scattered light and collective translational diffusion coefficient was investigated up to high concentrations, in the semidilute range, by means of elastic and quasielastic light scattering.

TL;DR: In this article, the interaction of SO 2 with sodium-covered surfaces of CaO (100) at 373, 473, and 673 K was investigated using X-ray photoelectron spectroscopy.

TL;DR: In this article, it was shown how the lattice model of Roe for adsorption of uncharged polymers can be extended to polyelectrolyte adaption.

TL;DR: In this article, the influence of stabilizers such as dextrans, non-ionic surfactants (poloxamers and Tweens), and β-cyclodextrin on the particle size and particle size distribution of poly(butyl 2-cyanoacrylate) nanoparticles was investigated.

TL;DR: In this paper, the authors investigated the relationship between the number of attached cells and the substrate work of adhesion for water and found that the maximum attachment occurred within a substrate WA range of 75 to 105 mJ m−2, but the WA at peak attachment was not the same for all bacteria tested.

TL;DR: In this paper, the authors investigated the effect of additives on the cloud point of Triton X-100 and concluded that it is a critical phenomenon rather than the growth of micelles.

TL;DR: In this article, the electrokinetic properties of two monodisperse colloidal systems have been studied by means of electrophoretic mobility and electrical conductivity measurements, and exact numerical techniques were used to solve the equations for conservation of mass, momentum, and charge around a hard, impermeable, nonconducting sphere with uniform surface charge density.

TL;DR: In this article, the experimental and theoretical light flux-vs-time curves are compared by means of the Mie theory to determine particle size and number concentration in colloidal systems.

TL;DR: In this paper, the critical micelle concentration and surface tension at CMC were determined by conductivity change measurements as well as by means of their surface tension changes, and the concentration of surface saturation and surface area per molecule (F) were calculated from the slope of the decreasing parts of surface tension lines vs log c.

TL;DR: In this article, a unified approach based on the full solution to the so-called ordinary Langevin equation of motion is presented to study particle deposition on a single spherical collector, where the inertial, external, and particle-particle interaction forces are comparable to the diffusive, or Brownian, force.

TL;DR: In this article, a description of the Langmuir-Blodgett deposition technique with which lipid monolayers or bilayers are deposited onto molecularly smooth mica surfaces is given.

TL;DR: In this article, the Poisson-Boltzmann equation is solved exactly for a thin cylindrical disk with a positive edge charge and a negative face charge, and the surface charge densities and particle dimensions are representative of montmorillonite clay.

TL;DR: In this article, the molecular structure of γ-aminopropyltriethoxysilane (γ-APS) coupling agent was studied on silicon powder by diffuse reflectance Fourier Transform Infrared (FT-IR) spectroscopy.

TL;DR: In this paper, it was shown that when a drop of water enters a pool of water two different phenomena may be observed depending upon the diameter and velocity of the entering drop, and the occurrence of the existence of the two phenomena has been characterized by a combination of the Froude number and the Reynolds number.

TL;DR: In this paper, the adsorption of the proteins: immunoglobulin G, protein A, and fibronectin was quantitated in a study applying both ellipsometry and radiotracer techniques.

TL;DR: The kinetics of antibody-binding to surface-immobilized antigen was studied by ellipsometry, showing that the initial binding of antibody was linear to the square root of time rather than time, indicating an initial diffusion-rate limitation of the reaction.

TL;DR: In this article, the authors investigate the equilibrium merging of a liquid-vapor interface and of a solid surface with a weak and random heterogeneity in the mechanical approximation, and show that the contact angle hysteresis is much smaller than the surface heterogeneity when this one is small and at random.

TL;DR: In this article, solid-state silicon-29 and carbon-13 NMR spectroscopy, using cross-polarization and magic-angle-spinning techniques (CP-MAS), have been used to characterize 3-chloropropyl and 3-aminoproyl-modified silica and derivatives.

TL;DR: In this article, the authors studied the reorganization of the surface of polyethylene grafted with 1% acrylic acid during contact with water using contact-angle measurements, a color test, esterification, inverse gas chromatography and ESCA spectroscopy.