Abdulwahed SHGLABOW - Academia.edu (original) (raw)
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Norwegian University of Science and Technology
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Papers by Abdulwahed SHGLABOW
We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (H... more We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (HIPE) in which the internal-phase droplets, present at 95% volume fraction, remain spherical and organize themselves in the available space according to Apollonian packing rules. Such Apollonian emulsions are obtained from dispersing oil dropwise in water in the presence of very little surfactant, and allowing them to evolve at rest for a week. The packing structure of the droplets was confirmed through size distribution measurements that evolved spontaneously towards power laws with the known Apollonian exponents, as well as comparison of the structure factors of aged HIPEs measured by Small-Angle X-ray Scattering with that of a numerically simulated Random Apollonian Packing. Thanks to the perfect sphericity of the droplets, Apollonian emulsions were found to display Newtonian ow even at such extremely high volume fraction. We argue that these fascinating space-filling assemblies of sph...
We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (H... more We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (HIPE) in which the internal-phase droplets, present at 95% volume fraction, remain spherical and organize themselves in the available space according to Apollonian packing rules. Such Apollonian emulsions are obtained from dispersing oil dropwise in water in the presence of very little surfactant, and allowing them to evolve at rest for a week. The packing structure of the droplets were confirmed through size distribution measurements that evolved spontaneously towards power laws with the known Apollonian exponents, as well as comparison of the structure factors of aged HIPEs measured by Small-Angle X-ray Scattering with that of a numerically simulated Random Apollonian Packing. Thanks to the perfect sphericity of the droplets, Apollonian emulsions were found to display Newtonian ow even at such extremely high volume fraction. We argue that these fascinating, space-filling assemblies of s...
Cette these presente un nouveau procede de fabrication de microcapsules base sur l'emulsifica... more Cette these presente un nouveau procede de fabrication de microcapsules base sur l'emulsification de fluides non miscibles, sans utilisation de tensioactif. Les seules conditions sont des energies interfaciales favorables, un rapport de viscosite proche de 1 entre la phase interne (phase 1) et le fluide qui sert a faire la coque (phase 2), et un rapport de viscosite entre ce fluide (phase 2) et la phase externe (phase 3) qui est egalement proche de 1. Dans ce travail, nous avons fabrique des capsules avec un cœur qui est une solution aqueuse d'alginate de sodium ou qui est une huile polyalphaolefine 40. La coque est fabriquee a partir d'un polymere aliphatique ou epoxyurethane acrylate liquide qui est ensuite reticule par irradiation au rayon UV. Ces capsules sont dispersees dans une solution aqueuse. Nous nous concentrons sur la synthese de ces microcapsules. Dans un premier temps, nous caracterisons les proprietes physiques des fluides qui sont utilises pour faire les ...
EPL (Europhysics Letters)
We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (H... more We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (HIPE) in which the internal-phase droplets, present at 95% volume fraction, remain spherical and organize themselves in the available space according to Apollonian packing rules. Such Apollonian emulsions are obtained from dispersing oil dropwise in water in the presence of very little surfactant, and allowing them to evolve at rest for a week. The packing structure of the droplets was confirmed through size distribution measurements that evolved spontaneously towards power laws with the known Apollonian exponents, as well as comparison of the structure factors of aged HIPEs measured by Small-Angle X-ray Scattering with that of a numerically simulated Random Apollonian Packing. Thanks to the perfect sphericity of the droplets, Apollonian emulsions were found to display Newtonian ow even at such extremely high volume fraction. We argue that these fascinating space-filling assemblies of sph...
We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (H... more We have discovered the existence of extremely polydisperse High Internal-Phase-Ratio Emulsions (HIPE) in which the internal-phase droplets, present at 95% volume fraction, remain spherical and organize themselves in the available space according to Apollonian packing rules. Such Apollonian emulsions are obtained from dispersing oil dropwise in water in the presence of very little surfactant, and allowing them to evolve at rest for a week. The packing structure of the droplets were confirmed through size distribution measurements that evolved spontaneously towards power laws with the known Apollonian exponents, as well as comparison of the structure factors of aged HIPEs measured by Small-Angle X-ray Scattering with that of a numerically simulated Random Apollonian Packing. Thanks to the perfect sphericity of the droplets, Apollonian emulsions were found to display Newtonian ow even at such extremely high volume fraction. We argue that these fascinating, space-filling assemblies of s...
Cette these presente un nouveau procede de fabrication de microcapsules base sur l'emulsifica... more Cette these presente un nouveau procede de fabrication de microcapsules base sur l'emulsification de fluides non miscibles, sans utilisation de tensioactif. Les seules conditions sont des energies interfaciales favorables, un rapport de viscosite proche de 1 entre la phase interne (phase 1) et le fluide qui sert a faire la coque (phase 2), et un rapport de viscosite entre ce fluide (phase 2) et la phase externe (phase 3) qui est egalement proche de 1. Dans ce travail, nous avons fabrique des capsules avec un cœur qui est une solution aqueuse d'alginate de sodium ou qui est une huile polyalphaolefine 40. La coque est fabriquee a partir d'un polymere aliphatique ou epoxyurethane acrylate liquide qui est ensuite reticule par irradiation au rayon UV. Ces capsules sont dispersees dans une solution aqueuse. Nous nous concentrons sur la synthese de ces microcapsules. Dans un premier temps, nous caracterisons les proprietes physiques des fluides qui sont utilises pour faire les ...
EPL (Europhysics Letters)