Water-in-Oil Microemulsions: Counterion Effects in AOT
Microemulsions have important applications in various industries, including enhanced oil recovery, reactions, separations, drug delivery, cosmetics and foods. We investigated two different kinds of water-in-oil microemulsion systems, AOT (bis(2-ethylhexyl) sulfosuccinate) microemulsions with various counterions and perfluorocarbon-based
Inverse Microemulsion Polymerization of Acrylamide: Characterization of the Water-in-Oil Microemulsions and the Final Microlatexes FRAN~OISE CANDAU, YEE SING LEONG, GENEVIt~VE POUYET, AND SAUVEUR CANDAU* C.N.R.S., Centre de Recherches sur les Macromoldcules, 6 rue Boussingault, 67083 Strasbourg Cedex, France, and *Laboratoire d'Acoustique Mol~culaire, UniversitLouis Pasteur, 4 rue Blaise
WATER-IN-OIL POLYACRYLAMIDE-BASED MICROEMULSIONS
What is claimed is: 1. A water-in-oil microemulsion, comprising: a polyacrylamide; a fatty acid comprising a tall oil fatty acid, oleic acid, or a combination of a tall oil fatty acid and oleic acid; a surfactant; an oil continuous phase; and an aqueous discontinuous phase in the oil continuous phase, wherein the water-in-oil microemulsion contains 6 to 48 parts by weight of the polyacrylamide
The fatty acid includes a tall oil fatty acid, oleic acid, or a combination of a tall oil fatty acid and oleic acid. The water-in-oil microemulsion contains 6 to 48 parts by weight of the polyacrylamide, 30 to 62 parts by weight of the fatty acid, and 20 to 44 parts by weight of the surfactant per 100 parts by weight of the polyacrylamide, the
Microemulsions - an overview | ScienceDirect Topics
M. de la Guardia, S. Armenta, in Comprehensive Analytical Chemistry, 2011. 5.2.10.2 Microemulsion-based separations. Microemulsions are mixtures of oil, surfactant, and water that form spontaneously on bringing the three components together [69].Microemulsions are thermodynamically stable, and their formation is facilitated by the ultralow interfacial tension of these systems, which leads to
5 M.J. Lawrence, G.D. Rees, Microemulsions-based media as novel drug delivery systems, Advanced Drug Delivery Reviews 45 (2000) 89–121 Microemulsions are usually characterised by ternary phase diagrams, which three edges are the components of a microemulsion, namely, oil, water and surfactant. Any co-
Micelle, microemulsions, and gels for the conservation
These may include (a) new “green” surfactant-based self-assembled systems, (b) water-in-oil and waterless cleaning microemulsions for the treatment of contemporary art materials (e.g., acrylic paintings), (c) organogels to be used as support systems for the above-mentioned fluids, and (d) gels that are responsive to different external stimuli.
A novel approach to metal and metal oxide nanoparticle synthesis: the oil-in-water microemulsion reaction method Journal of Nanoparticle Research 2009 11 7 1823 1829 10.1007/s11051-009-9660-8 2-s2.0-70349729881 24 Sanchez-Dominguez M. Pemartin K. Boutonnet M. Preparation of inorganic nanoparticles in oil-in-water microemulsions: a soft and
Semicontinuous microemulsion polymerization - PDF Free
Boca Raton, FLA: CRC Press. [3] Stoffer JO, Bone T. Polymerization in water-in-oil micro-emulsions systems 1. J Polym Sci Part A: Polym Chem 1980;18:2641–8. [4] Candau F, Leong YS, Pouyet G, Candau S. Inverse microemulsion polymerization of acrylamide — characterization of the water-in-oil microemulsions and the final microlatexes.
Inverse emulsion polymerization technique was employed to synthesize hydrophobically modified polyacrylamide polymers with hydrophobe contents near to feed composition. Three different structures were obtained: multisticker, telechelic, and combined. N-Dimethyl-acrylamide (DMAM), n-dodecylacrylamide (DAM), and n-hexadecylacrylamide (HDAM) were used as hydrophobic comonomers. The effect of the
Solubilization and thermal properties of microemulsions
2.3 Solubility of Water in the Alcohol-Free Water-in-Oil Microemulsions The combination of Arlacel 20 and AOT was chosen from the several combinations of nonionic and anionic surfactants because this combination had been found to be the best system for the solubilization of water in the w/o microemulsions in a previous study (208).
The interactions between well-defined hydrophobically modified polyacrylamides (HMPAM) and the anionic surfactant SDS (sodium dodecyl sulfate) or the cationic surfactant DTAB (dodecyltrimethylammonium bromide) were studied in aqueous solution using steady-flow and oscillatory rheological experiments. The structure of the HMPAM used consists of randomly distributed blocks of hydrophobic
