Results 41 to 50 of about 979,553 (324)

A new gas discharge process for preparation of non-fouling surfaces on biomaterials [PDF]

open access: yes, 1993
A non-fouling surface containing immobilized polyethylene oxide (PEO) was achieved using an argon radio-frequency glow discharge treatment (RFGD) of polyethylene films precoated with Brij hydrocarbon-PEO surfactants.
Feijen, J.   +3 more
core   +2 more sources

Adsorption of Surfactants

open access: yesJournal of Japan Oil Chemists' Society, 1996
The thermodynamic equations were summarized for the adsorption of surfactants and surfactant mixtures from monomeric and micellar solution to the air/water and oil/water interfaces. The phase diagrams of adsorption and micelle formation were introduced and discussed for some examples such as ideal mixing, and nonideal mixing showing negative azeotrope ...
Makoto ARATONO, Takanori TAKIUE
openaire   +2 more sources

Surfactant Adsorption onto Cellulose Surfaces

open access: yesLangmuir, 2007
The adsorption of the cationic surfactant, hexadecyl trimethyl ammonium bromide, C16TAB, onto model cellulose surfaces, prepared by Langmuir-Blodgett deposition as thin films, has been investigated by neutron reflectivity. Comparison between the adsorption of C16TAB onto hydrophilic silica, a hydrophobic cellulose surface, and a regenerated ...
Penfold, J   +3 more
openaire   +2 more sources

Dynamic Surface Tension of Aqueous Solutions of Ionic Surfactants: Role of Electrostatics [PDF]

open access: yes, 2010
The adsorption kinetics of the cationic surfactant dodecyltrimethylammonium bromide at the air-water interface has been studied by the maximum bubble pressure method at concentrations below the critical micellar concentration.
Andelman, David   +3 more
core   +2 more sources

Effect of Polymer–Surfactant Adsorption on the Hindered Settling of a Mineral Suspension

open access: yesAdsorption Science & Technology, 2001
Competitive adsorption between anionic surfactant (SDS) and neutral poly(ethylene oxide) polymers (PEO) on carbonate mine tailings was investigated, with experiments being performed to check the order of reagent addition. The PEO adsorption plateaux were
Zygmunt Sadowski, Izabela Polowczyk
doaj   +1 more source

Study of mechanisms responsible for foaming-agent loss in porous media at high-temperature conditions

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2020
Steam-foam processes require the correct selection of a surfactant agent resistant to high temperatures, stable over time, and capable of producing mobility reduction of the steam.
Yulian Fernando Rodríguez-Pantoja   +2 more
doaj   +1 more source

TEM, XRD, and Thermal Stability of Adsorbed Paranitrophenol on DDOAB Organoclay [PDF]

open access: yes, 2007
Water purification is of extreme importance to modern society. Organoclays through adsorption of recalcitrant organics provides one mechanism for the removal of these molecules.
Frost, Raymond   +4 more
core   +2 more sources

Effect of surfactants on liquid side mass transfer coefficients [PDF]

open access: yes, 2005
In the present paper, the effect of liquid properties (surfactants) on bubble generation phenomenon, interfacial area and liquid side mass transfer coefficient was investigated.
Hebrard, Gilles   +4 more
core   +3 more sources

SYNTHESIS AND CHARACTERIZATION OF HDTMA-ORGANOCLAYS: INSIGHTS INTO THEIR STRUCTURAL PROPERTIES

open access: yesQuímica Nova, 2015
This study aims to synthesize and characterize organoclays developed from an Argentinian montmorillonite (Bent) using hexadecyltrimethylammonium bromide (HDTMA-Br) as the intercalation agent. Subsequently, an adsorption mechanism is proposed.
Pablo M. Naranjo   +3 more
doaj   +1 more source

Kinetics of Surfactant Adsorption at Fluid−Fluid Interfaces:  Surfactant Mixtures [PDF]

open access: yesLangmuir, 1999
The adsorption at the interface between an aqueous solution of several surface-active agents and another fluid (air or oil) phase is addressed theoretically. We derive the kinetic equations from a variation of the interfacial free energy, solve them numerically and provide an analytic solution for the simple case of a linear adsorption isotherm ...
Ariel, G., Diamant, H., Andelman, D.
openaire   +2 more sources

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