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Synthesis of silver nanoparticles using reducing agents obtained from natural sources (Rumex hymenosepalus extracts)
Silver nanoparticles are synthesized from silver nitrate solutions using extracts of Rumex hymenosepalus, a plant widely found in a large region in North America, as reducing agent, and two kinds of crystal structures are obtained: face-centered cubic and hexagonal. Expand
Synthesis of Core-Shell (Pd-Au) Bimetallic Nanoparticles in Microemulsions
Palladium-gold core-shell nanoparticles were synthesized in the aqueous domains of water in oil microemulsions by the sequential reduction of H2PdCl4 and HAuCl4. The nanoparticles were characterizedExpand
Drug Release Properties of Diflunisal from Layer-By-Layer Self-Assembled κ-Carrageenan/Chitosan Nanocapsules: Effect of Deposited Layers
The results suggest that these polyelectrolyte nanocapsules have great potential as a multifunctional nanocarrier for drug delivery applications. Expand
The sponge phase of a mixed surfactant system.
Analysis of lamellar phases in the same system shows that the bilayer thickness increases when the ionic surfactant concentration is increased, and a method is proposed to determine the geometrical obstruction factor from electrical conductivity measurements in ionic sponge phases. Expand
Effect of a neutral water-soluble polymer on the lamellar phase of a zwitterionic surfactant system.
The results of Freeze-Fracture Electron Microscopy and Small Angle X-ray Scattering experiments show that the addition of the polymer induces the spontaneous formation of highly monodisperse multilayered vesicles above a threshold polymer concentration. Expand
On the use of shear rheology to formulate stable foams. Example of a lyotropic lamellar phase
Abstract In order to formulate stable foams with gels, it is important to know their shear rheology properties. We illustrate this fact using a weak gel made of a lyotropic lamellar phaseExpand
Shapes and Coiling of Mixed Phospholipid Vesicles
The coiling transition of a cylindrical vesicles was observed under solvent flow, indicating that the vesicle coiling reported previously for this system does not depend on the SOPC:SOPS composition alone, but also on mechanical perturbations during the preparation steps. Expand
Interaction between poly(ethylene glycol) and two surfactants investigated by diffusion coefficient measurements.
Dynamic light scattering (DLS) and fluorescence recovery after pattern photobleaching (FRAPP) were used to study the interaction of low molecular weight poly(ethylene glycol) (PEG) with micelles ofExpand
Surface Self-Diffusion in L3 Phases
The self-diffusion coefficient of amphiphilic probes in the L3 phases of a surfactant system has been measured by fringe pattern photobleaching (FRAPP) experiments. The variation of the diffusionExpand
Foaming behaviour of polymer-surfactant solutions.
The results show that hydrophobically modified polymers have potential applications as additives in order to control the foaming properties of surfactant solutions. Expand