Showing papers in "Journal of Colloid and Interface Science in 1975"

TL;DR: In this article, it was shown that despite the van der Waals' forces being capable of increasing the elastic contact area between the ball and the plane, the force that is required to overcome the molecular forces arising when the contact is broken does not increase thereby.

TL;DR: In this article, the shape of the advancing liquid-air interface has been studied in a glass capillary over the range in which viscous and interfacial forces are the dominant factors controlling the system.

TL;DR: In this paper, the authors extended the Rice and Whitehead theory to higher surface potentials and obtained a better interpretation of experimental data taken during the course of zeta-potential determinations of fine capillaries and porous media.

TL;DR: In this article, an approximate expression for the force between unequal diffuse double layers at constant charge was derived using a method based on the "compression" approach developed previously for the case of similar double layers.

TL;DR: In this article, the thermodynamics of an idealized rough surface is treated, using the geometry of a vertical plate partially immersed in a liquid, and gravity is included explicitly in the theory.

TL;DR: In this paper, a study of the transmission and scattering of light by a colloidal suspension of magnetite is made, which indicates that the interaction of the colloidal particles in an applied magnetic field causes chains or needles to form that are large enough to be observed with an optical microscope.

TL;DR: In this paper, the activation energy for specific conduction was calculated for poly(2-hydroxyethyl methacrylate) (PHEMA) and three classes of water may exist in certain hydrogels.

TL;DR: In this article, titration studies of adsorption of nitrate, sulfate, and phosphate on goethite and α-chromia have been conducted to examine whether or not anion adsorship in these systems involves ligand exchange with surface groups.

TL;DR: In this article, a coagulation model is developed for destabilized particles in an isotropic turbulent flow and simple binary collision mean-free path concepts are employed for mono-disperse systems.

TL;DR: In this paper, the surface charge of monodisperse polystyrene chains has been investigated using potentiometric and conductometric titrations, and strong acidic groups were detected for latices prepared in the presence of strong acid soaps.

TL;DR: In this article, aluminum nitrate solutions were titrated with alkali (NaOH or KOH) over a temperature range of 24°C to 90°C, and a homogeneous distribution of added base was achieved by: (i) in situ decomposition of urea (90°C); and (ii) injection through a capillary submerged in the agitated salt solution.

TL;DR: In this paper, the methods of preparation of basic ferric sulfate sols consisting of particles uniform in shape of extremely narrow size distribution are described in detail, and the relevance of these systems to the study of corrosion of iron and steel is discussed.

TL;DR: In this paper, an unanticipated pressure sensitive, partial transformation of the metastable tetragonal zirconia to the monoclinic phase was encountered with the pressed ZrO2-C disk.

TL;DR: In this article, it was shown that by decreasing the number of solvent layers in the interlayer distance the amount of adsorbed polyvinylpyrrolidone was decreased, indicating that attachment of the polymer to the tetrahedral sheets is likely to occur.

TL;DR: In this paper, the interaction of octylhydroxamate on synthetic hematite has been investigated through adsorption studies, electrophoretic mobility measurements and infrared spectroscopy.

TL;DR: In this paper, the authors derived an expression for the rate of bubble formation at a liquid-liquid interface and also extended nucleation theory to describe the phenomena of bubble blowing nucleation.

TL;DR: In this paper, improved methods are proposed for approximating the total and differential scattering cross sections of ellipsoids of revolution of arbitrary axial ratio and orientation, based on the Rayleigh-Debye (Rayleigh-Gans) and anomalous diffraction approximations, and the exact Lorenz-Mie relations for spheres.

TL;DR: In this article, a (D, Dc)dDdDe has been measured for a Bartlesville and a Berea sandstone for a given size range ΔDe control penetration into pores of a wide range of diameters.

TL;DR: In this article, a theoretical model was developed based on the concept of equivalent cylindrical capillaries, which can produce both results: one with monotonic increasing permeability, and the other with maximum peak permeability when plotted as a function of pressure.

TL;DR: In this paper, the effect of impurities arising as a result of the preparation process, on the pzc and the iep of commercial rutile pigment produced by hydrolysis of the sulfate.

TL;DR: In this article, the adsorption characteristics of ortho-phosphate on hydrous γ-Al 2 0 3 from dilute aqueous solution at constant ionic strength (10 −1 M NaCl) is reported.

TL;DR: In this article, the authors used perylene and magnesium 8-anilinonaphthalene-1-sulfonate (ANS) to locate the critical micelle concentration (cmc) of aqueous surfactant systems.

TL;DR: The limit of superheat has been determined at atmospheric pressure for a wide variety of pure liquid hydrocarbons and for three binary mixtures of polycyclic alkenes and cyclic alkanes.

TL;DR: In this article, Deuteron magnetic resonance spectra have been measured for samples in the two lamellar phases (B and D ), the tetragonal rod phase (C ) and the C + D two-phase region of the sodium octanoate-decanol-water system.

TL;DR: In this article, the authors studied the second-order quadratic equations for the growth and dissolution of barium sulfate in the presence of N, N,N, N′,N′, n′ triethylenediaminetetra(methylene phosphonic acid) (TENTMP), sodium tetrametaphosphate, and sodium tripolyphosphate.

TL;DR: In this paper, the interaction of tetradecyl-trimethylammonium bromide with the trihydroxy bile salt, sodium cholate, and the dihydrox bile salts, sodium deoxycholate, was studied by surface tension, conductivity, light scattering, and viscosity techniques at 25°C.