Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Marit-Helen Ese"'
Publikováno v:
Analytical Chemistry. 81:3042-3050
For studies of protein-lipid interactions, thin films at the air-water surface are often employed as model systems for cell membranes. A convenient manner in which to study these interactions is the Langmuir technique, which allows for formation of m
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 299:186-197
A series of lanthanide (Eu3+) cored fluorinated dendrimers of generations 1 through 4 (G1–G4) have been studied with respect to their film-forming properties at the air–water surface. All dendrimers studied here formed stable films at the air–w
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 276:45-58
Model emulsions stabilized by means of silica nanoparticles have been investigated. The effect of the modification of the particle surface has been monitored using infrared (IR) spectroscopy, contact angle measurements and zeta potential measurements
Publikováno v:
Journal of Dispersion Science and Technology. 26:673-682
Emulsion inversion has been studied in a system based on oil (toluene/heptane), 5β‐cholanic acid, and an alkaline brine solution by varying the concentration of sodium hydroxide. At an intermediate pH w/o emulsions were formed, and in the high pH
Publikováno v:
Journal of Dispersion Science and Technology. 26:145-154
Interfacially active inorganic particles from the reservoir are often produced together with crude oil. These fines can have a tendency to accumulate at the water/oil interface and eventually stabilize w/o and o/w emulsions. The properties of the par
Autor:
Peter K. Kilpatrick, Marit-Helen Ese
Publikováno v:
Journal of Dispersion Science and Technology. 25:253-261
Increasingly, crudes of high acidity are observed in production of petroleum reserves. Naphthenic acids, which are generally cyclic and branched aliphatic carboxylic acids, are interfacially active and adsorb at water–oil interfaces to form monolay
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 182:199-218
The surface and interface properties of lignosulfonate (LS) and Kraft lignin have been studied by means of the Langmuir technique. Surface films at different bulk concentrations and varying pH, the effect of electrolytes and the interaction of LS and
Autor:
Marit-Helen Ese
Publikováno v:
Journal of Dispersion Science and Technology. 20:1849-1859
Compressibilities (Cs) and excess surface areas (ΔAM) are calculated for mixed films of asphaltenes and resins and asphaltenes combined with different commercial demulsifiers from Langmuir measurements. Both attraction and repulsion is observed betw
Publikováno v:
Journal of Colloid and Interface Science. 220:293-301
The influence of chemical additives on asphaltene films on water surface and at oil/water interface is studied by means of the Langmuir technique. It was found that some demulsifiers of high molecular weight alter the asphaltene film on water surface
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. :225-232
Interfacially active components (asphaltenes and resins) have been extracted from North Sea crude oils and aged at 50°C. Model water-in-oil emulsions have been stabilized by these compounds in different amounts and ratios. The stability of these emu