Showing papers in "Journal of Colloid Science in 1965"

TL;DR: In this article, the authors derived a flow equation for pseudoplastic flow that is associated with the formation and rupture of structural linkages in both aqueous and nonaqueous media.

TL;DR: In this article, a critical analysis of the extensive experimental data on the relative viscosity of suspensions of uniform spherical particles was made, and the coefficients of different power series relating relative visco-solutions and volume fraction solids were determined using a nonlinear least squares procedure.

TL;DR: In this article, the porosity of the spherical model and the contact angle of the fluid were derived for describing the penetration of fluids into the void spaces of a collection of uniform solid spheres.

TL;DR: In this article, a new technique for estimating diffusion rates in solid materials from transient sorption data was developed and applied to the diffusion of gases in polymer films, where the analysis applied to solutes which are sorbed according to a particular isotherm: one described by a linear component (Henry's law) and a commonly observed nonlinear component (Langmuir equation).

TL;DR: In this article, the heat of the adsorption of water was determined at 25°C and at 50°C for a high charge density sodium vermiculite sample at various stages of hydration of the clay.

TL;DR: In this article, the effects of heterogeneity in particle size, and of particle motion in a rarefied medium are examined using numerical solutions of the coagulation equations, and a self-preserving spectrum was found to be independent of the initial distribution after a sufficiently long time.

TL;DR: In this article, an improved theory is presented which takes into account the exact shape of the bubble and, in the case of multicomponent gases such as air, the changing composition.

TL;DR: In this paper, the authors measured the coagulation rate of uncharged NaCl aerosols with mean particle radii of 25 and 45 A by means of a flow method: the aerosol was passed through a pipe and the ratio of particle concentrations at the inlet and the outlet of the pipe was measured nephelometrically after “developing” the particles by condensing DBP vapor on them.

TL;DR: In this article, a quantitative linear relation between the heat of immersion and the pH of the zero point of charge (zpc) of inorganic oxides has been derived, and the validity of the derivation has been substantiated by literature values of the two quantities for the oxides.

TL;DR: In this paper, the deposition of aerosol particles from an air stream of velocity V0 upon a circular cylindrical fiber perpendicular to the stream in a homogeneous electrical field E0, has been investigated theoretically.

TL;DR: In this paper, the effect of a number of variables on the coagulation of dilute clay suspensions with aluminum and iron coagulants was investigated, including the nature and concentration of clay, pH, and the presence of various ions.

TL;DR: In this paper, it is shown that coupling exists between translational and rotational Brownian movements of rigid macroscopic particles possessing screw-like geometric properties, and the cross-effect associated with this coupling coefficient manifests itself by the appearance of cross-terms in the expressions for the components of the diffusion flux vector in a six-dimensional configuration space when projected onto its respective three-dimensional physical and orientation subspaces.

TL;DR: In this article, Onsager's principle of kinetic coefficient symmetry is used to build a uniform theory of motion of aerosol particles and gases in the presence of temperature gradients.

TL;DR: When account is taken of the uncertainties in both theory and experimental data, there is good agreement between the predicted and observed time course of membrane swelling.

TL;DR: The electrophoretic mobility of rutile has been related to the stability of its dispersions in solutions of Aerosol OT (sodium di-2-ethylhexyl sulfosuccinate) in p -xylene over a range of surfactant concentrations as mentioned in this paper.

TL;DR: In this article, experimental measurements of the thermal force on spherical sodium chloride aerosols in argon are reported and the experimental measurements in the slip flow region are compared with slip flow theories, including a second-order theory presented here.

TL;DR: In this article, the effect of urea on the c.c.m. of polyoxyethylene straight-chain alkanols has been investigated and it was shown that the possibility of channel compound formation in these highly concentrated urea solutions has been excluded.

TL;DR: In this article, the shape of a fluid drop at a fluid-liquid interface in two-phase systems was confirmed experimentally by measuring characteristic dimensions of stabilized air bubbles at an air-water interface.

TL;DR: The existence of two types of molecular, adsorbed water on the surface of precipitated silica has been confirmed as discussed by the authors, and the data suggest that past reports of water adsorption on silica surfaces have shown monolayer coverage to be complete at spurious partial pressures.

TL;DR: In this article, the absolute angular scattered intensities for a Mie scattering system have been determined for a Dow polystyrene latex of large diameter (DEM = 1.305 μ) with unpolarized, vertically polarized, and horizontally polarized incident light.

TL;DR: In this article, the effect of heat and time on the protection of a red gold sol from flocculation by 1% NaCl solution has been investigated, and it was shown that 1 g. of gelatine can protect 90 g of gold sol.

TL;DR: In this paper, the authors derived the partition coefficients of a homogeneous and normal distribution of p, t-octylphenoxyethoxyethoxideethanols (OPE1−10) in the system, isooctane-water, at 25°C.

TL;DR: In this article, the critical micelle concentration and micellar molecular weight were measured for polyoxyethylene (23) lauryl alcohol in ethanol-water and dioxane-water solvent systems.

TL;DR: In this article, the authors used Mooney's equation to obtain effective volume fractions from viscosities, which is consistent with the viewpoint that the effective volume fraction is given by the polymer volume plus the volume excluded to particles by the interaction of the charged double layers.

TL;DR: The equilibrium shape of a liquid or gas drop (phase 1 of density d1) at a horizontal interface separating two fluid phases (Phases 2 and 3 of densities d2 and d3) can be calculated from the principles of capillarity as discussed by the authors.

TL;DR: In this paper, a vapor pressure method has been used to determine the solubility of vinyl acetate, styrene, and vinyl hexanoate in both the aqueous phase and in the polymer particles.

TL;DR: In this paper, the surface charge on silver iodide suspended in a solution has been measured as a function of the potential of a cell consisting of a silver-silver iodide electrode, the solution under consideration, and a reference electrode.

TL;DR: In this paper, the separation of adsorption complexes formed by the interaction of sodium dodecyl sulfate (SDS) with gelatin at pH values below the isoelectric point has been investigated.

TL;DR: In this article, the contact angles of hexadecane on a fluoropolymer were measured over a 130°C temperature range and the advancing angle was found to be independent of temperature and the receding angles increased slightly with temperature.

TL;DR: The model used is used to derive the self-diffusion coefficient, the viscosity, and the thermal conductivity of a monolayer in terms of properties that are related to the surface isotherm and the utility of the model for processes involving natural membranes is considered.