Showing papers in "Journal of Colloid and Interface Science in 1976"

TL;DR: In this paper, the adsorption of Fe(III, Cu(II), Cd(II, and Pb(II) from aqueous solutions of constant ionic strength at silica-water interfaces was investigated by potentiometric titrations at 25°.

TL;DR: In this article, the Laplace excess pressure of a liquid drop adhering to a cylindrical fiber to linear drop dimensions and the contact angle is derived, and an experimental technique for contact angle measurement is given, together with results for some well-defined systems.

TL;DR: In this paper, an improved Dubinin-Astakhov adsorption equation was proposed to predict the isotherms of high pressure gases on MSC-5A.

TL;DR: In this article, the interaction of a water-soluble cationic substituted cellulose ether with SDS has been examined through a study of precipitation patterns and measurements of surface tension, foaming, and electrophoretic mobility.

TL;DR: Some detergents of the type CTA- X, X being a substituted benzoic acid, have been shown to produce viscoelasticity in very dilute aqueous solution, but it is not possible yet to reach conclusions about the size and shape of the aggregates in the vis coelastic solutions.

TL;DR: In this paper, the authors used intermolecular forces acting throughout a finite region near the drop's edge to predict experimental spreading rates for the last two stages of a liquid drop on a solid surface.

TL;DR: In this paper, a local correlation model is developed in a gradient approximation to the interfacial density distribution, which relies on fewer assumptions than either the modified Van der Waals model or Toxvaerd's mean field perturbation theory.

TL;DR: In this article, the viscous flow behavior of a colloidal sol can be described in terms of the various contributions to the energy dissipation during flow, and a satisfactory description of the known features of the basic shear diagram can be obtained by attributing most of the dissipation to two processes: (i) viscous flows of the suspension medium around the flocs, which are the basic flow units, and (ii) the energy involved in stretching the flos in order to break floc doublets apart so that the amount of structure in the system is

TL;DR: In this paper, a titrated iron(III) nitrate solution of varying concentration was titrated with base (NaOH) over a temperature range (24 to 90°C) by means of a homogeneous injection technique.

TL;DR: The surface charge-pH, potentiometric titration data on precipitated and heat treated silicas has been analyzed with the aid of complimentary tritium exchange, gas adsorption and dissolution rate studies as mentioned in this paper.

TL;DR: In this paper, the effect of interaction forces on the trajectories of equal-sized spheres in shear flow is calculated and the conditions under which a touching doublet can form (i.e., in the so-called primary energy minimum) and the system coagulates, (ii) nontouching doublets form (in a secondary minimum), or (iii) no permanent doublets can form, while the system is stable.

TL;DR: In this paper, the relationship between the experimental flow parameters and the colloidal parameters (volume fraction, particle size, and interactive forces) is examined and ten such relationships can be used to test the validity of possible models of the flow of coagulated suspensions.

TL;DR: In this paper, the authors calculated the lower limit of the size of slit pores in an ensemble of flat-surface, slit-pores, where the capillary meniscus can coexist with adsorption films.

TL;DR: In this paper, the surface films of anthraquinone derivatives with long alkyl chains have been investigated and it has been concluded that different types of orientation of the anthrasquone nuclei can be realized in the surface film of these long-chain dyes, depending on the chemical modifications, such as variation in the numbers and relative positions of the long substituent groups, and also on the physical conditions for deposition.

TL;DR: In this article, the pzc values of Co(OH)2, Co3O4, NiO, and NiO have been determined between 25 and 80°C.

TL;DR: The influence of the distribution of chain length of the ether chain in polyethylene glycol dodecyl ethers and of various additives on the solubilizing capacity of nonionic surfactants was investigated by determination of the regions for isotropic solutions.

TL;DR: In this article, the spherical ferric-hydroxy polycations were isolated from a ferric nitrate solution and the aging process was modified by adding nitrate or chloride ion to the isolated species.

TL;DR: In this paper, a unified theoretical framework is developed to study the stability of stagnant films having a wide range of thicknesses and located on a solid surface immersed in a viscous fluid.

TL;DR: In this article, the authors derived the complete solution to the kinetic equation describing time evolution of the composition distribution c(m, n;t) in terms of the generating function F(z,t) = ∑ g=1 ∞ C g (t)z g for the size distribution cg(t) and the initial generating function T o (x,y)=T(x, y;t;t=O)

TL;DR: In this paper, the Dubinin-Radushkevich equation was applied to the adsorption of vapors on microporous carbons, and it was shown that the data can be linearized by using the more generalized Dubin-Astakhov equation, i.e., W = W 0 exp [− k( ∈ E ) n ].

TL;DR: In this article, an exact analytical study of the electrophoretic motion of two arbitrarily oriented spheres is presented, and corrections to Smohichowski's equation are presented for various separation distances and several values of the particles' zeta potential ratio.

TL;DR: In this article, four different experimental methods were applied to find the values of the thermal slip coefficient of gases, i.e., k t = 1.05 ÷ 1.13.

TL;DR: In this paper, the effect of potential on protein-surface interactions has been studied in situ to determine the conformation and adsorbance of fibrinogen, γ-globulin, and serum albumin adsorbed on platinum and germanium for a range of imposed potentials.

TL;DR: In this article, the authors studied the adsorption of benzene and acetonitrile on silica-alumina gels covering the whole composition range (0-100% SiO 2 ) by infrared spectroscopy.

TL;DR: In this article, the Hamaker constant of polystyrene in water was calculated based on the observed transition of secondary to primary doublets of poly styrene latex spheres, an order of magnitude higher than that observed by all other methods.

TL;DR: In this article, the stability of binary mixtures of chemically dissimilar, monodispersed spherical particles has been investigated using the light scattering technique recently introduced by Lips and Willis (29).

TL;DR: In this paper, a method for the determination of the force of adhesion of colloidal particles adhering to a planar surface in aqueous solutions has been used.

TL;DR: In this article, the adsorption of carbon dioxide and the co-adoption of water on CaY- and NiY-zeolite has been studied by means of in situ infrared spectroscopy.

TL;DR: In this article, the tetraalkylammonium groups are present in the extracellular region of the erythrocyte membrane, which could explain why erythcytes are lysed by SiO 2, but not by TiO 2.