Microemulsions / Monzer Fanun / Boca Raton [Etats-Unis] : CRC Press - Taylor Francis Group (2009)

Titre : Microemulsions Titre original : Properties and applications Type de document : texte imprimé Auteurs : Monzer Fanun, Editeur scientifique Editeur : Boca Raton [Etats-Unis] : CRC Press - Taylor Francis Group Année de publication : 2009 Collection : Surfactant science series num. 144 Importance : XXXI-533 p. Présentation : ill. Format : 23 cm ISBN/ISSN/EAN : 978-0-367-38621-4 Note générale : Index - Bibliogr. Langues : Anglais (eng) Catégories : Microémulsions Index. décimale : 541.34 Solutions Résumé : The effective use of microemulsions has increased dramatically during the past few decades as major industrial applications have expanded in a variety of fields. Microemulsions: Properties and Applications provides a complete and systematic assessment of all topics affecting microemulsion performance and discusses the fundamental characteristics, theories, and applications of these dispersions. Thoroughly encompassing the significant developments of the past ten years, this book describes a wide range of topics, including interactions at microemulsion interfaces, new types of surfactants, and the fundamentals of nanotechnology. It outlines experimental and traditional measurement techniques in a variety of microemulsified systems and provides reliable coverage of applicable techniques. - Presents recent advances in the characterization of microemulsion properties. - Covers new types of materials used for the formation and stabilization of microemulsions. - Includes new applications such as nanoparticle formation, drug delivery, decontamination, and electrokinetic chromatography. - Provides case studies in each chapter to clarify theoretical material. Comprising the work of an international community of colloid scientists, this book explains why microemulsions are used for the intended application, how they are made, and how they react. Each chapter contains a description of the fundamental phenomena and principles involved in microemulsion processes, emphasizing the mechanism of microemulsion formation and deformation. A summary of recent research, the book eliminates the need to search through dozens of arcane online journal articles for critical information. Note de contenu : - 1. A phase diagram approach to microemulsions - 2. Physicochemistry of W/O microemulsions : Formation, stability, and droplet clustering - 3. Percolating phenomenon in microemulsions : Effect of external entity - 4. Influence of polyethylene glycols and polyethylene glycol dimethyl ethers upon the internal dynamics of water in oil microemulsions - 5. Microemulsions with mixed nonionic surfactants - 6. Simple alcohols and their role in the structure and interaction of microemulsion systems - 7. Formation and characterization of emulsified microemulsions - 8. Dynamics of solvent and rotational relaxation of RTILs in RTILs-containing microemulsions - 9. Microemulsion systems and Their Potential as Drug Carriers - 10 Physicochemical characterization of pharmaceutically applicable microemulsions : Tween 40/Imwitor 308/Isopropyl Myristate/Water - 11 Places of microemulsion and emulsion in cancer therapy : In vitro and in vivo evaluation - 12 Enzyme kinetics as a useful probe for micelle and microemulsion structure and dynamics - 13. Biocatalysis in microemulsions - 14. Microemulsions as decontamination media for chemical weapons and toxic industrial chemicals - 15. Microemulsions as potential interfacial chemical systems applied in the petroleum industry - 16. Nanoparticle formation in microemulsions : Mechanism and Monte Carlo simulations - 17. Nanoparticle uptake by (W/O) microemulsions - 18. TiO2 nanoparticles in microemulsion : photophysical properties and interfacial electron transfer dynamics - 19. Microemulsions as pseudostationary phases in electrokinetic chromatography : I. Estimation of physicochemical parameters. II. Analysis of drugs in pharmaceutical Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33571

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Microemulsions with mixed nonionic surfactants and isopropylmyristate / Monzer Fanun in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 5/2010 (09-10/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 5/2010 (09-10/2010) . - p. 312-316 Titre : Microemulsions with mixed nonionic surfactants and isopropylmyristate Type de document : texte imprimé Auteurs : Monzer Fanun, Auteur Année de publication : 2010 Article en page(s) : p. 312-316 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conduction électrique Diffusion aux petits angles Microémulsions Myristate d'isopropyle Surfactants Thermodynamique Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Water/propylene glycol/sucrose laurate/ethoxylated mono-di-glyceride/isopropylmyristate microemulsion systems were formulated and investigated using electrical conductivity and small angle X-ray scattering. The solubilization capacity of water in oil is dependent on the surfactants mixing ratio (w/w). The free energy of solubilization (ΔGo s) values for water-in-oil microemulsions were calculated and found to decrease with water content in the water-in-oil microemulsions, they decreased with increasing ethoxylated mono-di-glyceride content in the mixed surfactants. The activation energy of conductive flow was estimated and a percolation phenomenon was revealed in these systems. Small angle X-ray scattering results indicate that the periodicity increases linearly with the increase in the water volume fraction in these microemulsions. The correlation length increases with the increase in the water volume fraction to a certain value then decreases. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9958 [article]

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Properties of microemulsions with mixed nonionic surfactants and mint oil / Monzer Fanun in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 3/2010 (24/05/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 3/2010 (24/05/2010) . - p. 166-172 Titre : Properties of microemulsions with mixed nonionic surfactants and mint oil Type de document : texte imprimé Auteurs : Monzer Fanun, Auteur Année de publication : 2010 Article en page(s) : p. 166-172 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Microémulsions  biocompatibles'  'Seuil  de  percolation'  'Surfactants  non-ionique'  'Energie  d'activation'  'Ecoulement  conducteur'  'Dispersion  d'intensité' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : In this study we used electrical conductivity, dynamic viscosity, dynamic light scattering, and small angle X-ray scattering for the characterization of the water + propylene glycol/sucrose laurate/ethoxylated mono-di-glyceride/peppermint oil microemulsion systems. The maximum water solubilization in the peppermint oil was found to be dependent on the surfactants mixing ratio (w/w). A Static percolation threshold was determined. The activation energy of conductive flow depends on the surfactants mixing ratio. The hydrodynamic diameter of the diluted microemulsions decreases with the increase in temperature. The periodicity d of the microemulsions increases with the increase in the aqueous phase content. The correlation length ξ increases and decreases with the increase in the aqueous phase content indicating the onset of structural transitions. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9467 [article]

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SAXS study on azithromycin loaded nonionic microemulsions / Monzer Fanun in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 1/2010 (01-02/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 1/2010 (01-02/2011) . - p. 34-39 Titre : SAXS study on azithromycin loaded nonionic microemulsions Type de document : texte imprimé Auteurs : Monzer Fanun, Auteur ; O. Glatter, Auteur Année de publication : 2011 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Azithromycine Chimie pharmaceutique Médicaments Microémulsions Tags : 'Microémulsions  U-type'  'Délivrance  de  drogue'  GIFT  'Taille  des  particules'  'Rayon  d'action  efficace'  Azithromycine Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Structure of water/propylene glycol/ethoxylated mono-di-glyceride/peppermint oil/ethanol microemulsions solubilizing azithromycin has been investigated at room temperature by small-angle X-ray scattering (SAXS) technique. The scattering data were evaluated by Indirect Fourier Transformation (IFT) or Generalized Indirect Fourier Transformation (GIFT) methods depending on the aqueous phase content. The growth of the microemulsions droplets by increasing the water content and the effect of azithromycin incorporation in the microemulsions were investigated. The Indirect Fourier Transformation gives the real space pair-distance distribution function: a facile way for the quantitative estimation of structure parameters of the microemulsions. It was found that the size of the microemulsion aggregates or repeating distances in the microemulsion increases with the aqueous phase content. The maximum diameter of the drug free and drug loaded microemulsions aggregates depend on their microstructure. The values of the effective interaction radius of the microemulsions are higher for the drug free compared to the drug loaded microemulsions aggregates. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10668 [article]

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Volumetric and diffusion properties of water/surfactant/n-propanol/4-allylanisole micellar systems / Monzer Fanun in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 5 (09-10/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 5 (09-10/2011) . - p. 400-407- Titre : Volumetric and diffusion properties of water/surfactant/n-propanol/4-allylanisole micellar systems Type de document : texte imprimé Auteurs : Monzer Fanun, Auteur ; Jochanan Blum, Auteur ; Reinhard Schomäcker, Auteur ; Michael Schwarze, Auteur ; Diana Meltzer, Auteur ; Ahmad Shakarnah, Auteur Année de publication : 2011 Article en page(s) : p. 400-407- Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : 'Comportement  phase'  'Vélocité  ultrasonique'  Densité  'Compressibilité  isentropique'  'Diamètre  hydrodynamique' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Sol-gel encaged [(C8H17)3NCH3][RhCl4] catalyses the double bond isomerization in the flavoring agent 4-allylanisole in aqueous microemulsions. In order to provide optimal composition of the reaction mediumwater/n-propanol/surfactant/4-allylanisole micellar systems were formulated. The surfactants were sodium dodecyl sulfate, cetyltrimethylammonium bromide, sucrose monolaurate, and polyethylene glycol (7) glyceryl cocoate. The ratio (w/w) of n-propanol/surfactant equals 2/1. The extent of the microemulsions region as function of temperature was determined. The micellar systems were characterized by the volumetric parameters, density, excess volume, ultrasonic velocity and isentropic compressibility. The micellar densities increase with the increase in the water volume fraction. Ultrasonic velocities increase with the increase in water volume fraction up to 0.8 then decrease. Ultrasonic velocities increase with temperature for water volume fractions below 0.8 and decrease for water volume fractions above 0.8. Quantitative analysis of the volumetric parameters enabled the characterization of structural transition along the micellar phase. The particle hydrodynamic diameter of the oil-in-water systems was determined as function of temperature. The particle hydrodynamic diameter decreases in the case of the ionic surfactants while in the case of nonionic surfactants it increases. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12563 [article]

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