Collaborate for free with an online version of microsoft powerpoint. The microemulsion definition provided by danielson and lindman in 1981 will be used as the point of reference. Create simple slideshows or complex multimedia displays for. Powerpoint prasentationssoftware mit office 365abo nutzen. Ppt microemulsions powerpoint presentation free to. Normally, an oilwater interface has high interfacial energy or tension so that the free energy of formation of the interface is highly positive. Office tools downloads microsoft office powerpoint by microsoft and many more programs are available for instant and free download. Microemulsion is a nanoparticle synthesis technique in which two immiscible fluids such as water in oil wo, oil in water ow or water in supercritical carbon dioxide wsc co2 are thermodynamically stabilized with the aid of a surfactant. Slide presentation software, ppt microsoft powerpoint. Download latest version of microsoft excel 2016 for windows. S and hence the free energy of formation of the system is given by the expression. Microemulsion definition is an emulsion in which the dispersed phase is in the form of very small droplets usually produced and maintained with the aid of. Here, we introduce a general free energy expression for weak selfassembly.
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The singlephase and multiphase zones were measured by the ternaryphase diagram, and the microstructure of the sfme was determined by. Microemulsion definition of microemulsion by merriamwebster. Microemulsion method is one of the recent and ideal techniques for the preparation of. Microemulsion is a transparent thermodynamically stable isotropic dispersion of two immiscible liquids such as a nonpolar liquid. Microemulsions microemulsions are thermodynamically stable, optically transparent, isotropic dispersions of aqueous and hydrocarbon liquids stabilized by an interfacial film of surfactant molecules microemulsions show diverse structural organizations due to wide range of surfactant concentrations, wateroil ratios, temperature etc. Create or view powerpoint presentations with this uptodate version of the popular software package. Surfactantfree microemulsion composed of oleic acid, n. Synthesis of nps by microemulsion method intechopen.
Lipidmonolayer enclosing bilayer enclosing ana liquid lipid core. Calculate formulas and present financial data with easy when you use this great program. Formation of microemulsions 2oil 1 2 3mg g g g t s gm free energy change for microemulsion formation g1 free energy change due to increase in total surface area g2 free energy change due to interaction between droplets g3 free energy change due to adsorption of surfactant at the oilwater interface. Schulman and coworker 1959 subsequently coined the term microemulsion. Free download fileplanet microsoft powerpoint 2016. Over the last few years, surfactant free microemulsions became a major topic at our institute and were thoroughly studied using the reference system. Basic aspects of microemulsion microemulsion are fluid, transparent, thermodynamically stable oil and water system and stabilized by a surfactant usually in conjunction with cosurfactant.
This microemulsion meets the standard for pesticide microemulsions and. The average droplet size of the microemulsion was 28. Co2responsive surfactantfree microemulsion langmuir. A dispersion of droplets of one liquid in another, immiscible liquid. The addition of amphiphilic compounds can bring the interfacial tension to a very low value, leading to spontaneous formation of one dispersion into the other, i.
View microemulsion ppts online, safely and virus free. Free microsoft office for the web, word, excel, powerpoint. Create simple slideshows or complex multimedia displays for inperson or online presentations. Microemulsion is defined as microemulsion are clear, transparent, thermodynamically stable dispersions of oil and water, stabilized by an interfacial film of surfactant. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The drug is be dissolved in the lipophilic part of the microemulsion i. The dpph free radical scavenging of the res smeeds and res was. Study of surfactantfree microemulsions and microemulsions. Introduction preparation characterization of prepared microemulsion application contents 2. How to explain microemulsions formed by solvent mixtures without.
A, is very large, typically a factor of 104 to 105. This thesis deals with the study of microemulsions and is composed of two main parts. Erd is the primary anaerobic biological process by which problematic chlorinated solvents such as tetrachloroethylene pce and trichloroethene tce. Download and install office apps for free on multiple pcsmacs, tablets, and phones. Both ow and wo microemulsion can be used for parenteral delivery. Includes premium versions of word, excel, powerpoint, onenote, outlook, publisher, and access. Transdermal drug delivery has many advantages over the oral route of administration. Microemulsionbased media as novel drug delivery systems. These free powerpoint templates allow for stylized charts and graphs while still maintaining a professional tone. The oil and the water phases were n,ndimethylcyclohexylamine dmcha and deionized water, respectively, and n,ndimethylethanolamine was used as an amphisolvent. The formulation and characterisation of foodgrade waterinoil wo microemulsions as carriers for bioactive molecules were studied. Historical background definition composition of microemulsion major goals advantages disadvantages macroemulsion vs microemulsion types of microemulsions preparation methods of microemulsions equipments used for the preparation of microemulsions formation of microemulsion. Fileplanet microsoft powerpoint 2016 free download. Microemulsion based media as novel drug delivery systems.
This is the genuine microsoft powerpoint app for android phones and tablets. Microemulsion formulation of carbendazim and its in vitro. A general schematic presentation of how the emulsion. Chemical method, especially microemulsion flooding, plays an important role in enhanced oil recovery technique due to its ability to reduce interfacial. Microemulsion article about microemulsion by the free. Microemulsion is an isotropic mixture of oil, surfactant, cosurfactant and drug. I last time made a video on how to get powerpoint 2016 for free. Or, for a fashion or floral presentation, use the elegant savon design template for powerpoint. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Download free presentation templates compatible with microsoft powerpoint, creative ppt backgrounds and 100% editable slide designs. The microemulsion concept was introduced as early as 1940s by hoar and schulman who generated a clear singlephase solution by titrating a milky emulsion with hexanol. Oil and the water phases can be combined with surfactant and a cosurfactant is then added at slow rate with gradual stirring untill the system is transparent.
There are numerous tools that you can use with powerpoint. Share them with others and work together at the same time. Jump start your school, work, or family project and save time with a professionally designed word, excel, powerpoint template thats a perfect fit. Microemulsion formulations have distinct advantages over macroemulsion systems when delivered parenterally because of the fine particle microemulsion is cleared more slowly than the coarse particle emulsion and, therefore, have a longer residence time in the body. Land your dream job with free resume and cover letter templates from office make your resume or curriculum vitae cv stand out with one of these free, eyecatching templates and matching cover letters in word that showcase your skills and work history. In the comments section, many of you were asking how to actually download the presentation made by. With office for the web you can view, edit, and share word, excel, powerpoint, and onenote files on your devices using a web browser, so you can work anywhere.
Upon mild agitation followed by dilution in aqueous media, such as gastrointestinal gi fluids, the systems can form fine oil in water ow microemulsions which usually have a droplet size less than 100 nm. Microemulsions are selfaggregated colloidal systems that provide a controllable system with a. With microsoft powerpoint for android youll be able to create bold presentations quickly, start presentations quickly, and deliver an experience that will leave your audience with a lasting impression. Features macro emulsion micro emulsion definition emulsions consist of roughly spherical droplets of one phase dispersed into the other they constantly evolve between various structures ranging from droplet like swollen micelles to bi continuous structure.
The entropy of dispersion of the droplets is equal to t. In 1975, ruckenstein and chi considered the free energy formation of microemulsion to be consisted of three contributions. In the first part, surfactant free microemulsions are studied, whereas in the second part microemulsions with surfactants and cosurfactants are investigated. A potential novel drug delivery system jaspreet kaur saini 1, ujjwal nautiyal 1, senthil kumar m 1, devendra singh 2, firoz anwar 3 1department of pharmaceutics, himachal institute of pharmacy, paonta sahib, himachal pradesh, india. Choose from thousands of free microsoft office templates for every event or occasion. A surfactant free microemulsion sfme with co2 stimuli responsive properties was prepared.
Herein, we report a surfactant free microemulsion denoted as sfme, consisting of oleic acid oil phase, water, and npropanol without the amphiphilic molecular structure of a traditional surfactant. Download free powerpoint themes and powerpoint backgrounds for your presentations. Powerpoint themes allow for a variety of presentation topics, giving you the freedom to choose the best presentation template design for your project. Microemulsions in food industry uses and applications. The formation and stability of microemulsions can be described by. One problem with this approach was that the purity of the water that is needed for ensuring a stable microemulsion was considerably lower than the purity of the water typically generated by the armys purification units. How to download powerpoint 2016 presentation for free. Generally, a microemulsion consists of oil, water, surfactant, and sometimes cosurfactant. Introduction among many of known nanomaterials, the special position belongs to magnetic nanopa rticles. The relative oil and water domains that form in nanoemulsion systems are usually so small about 1020 nm or less in diameter that they do not scatter light. Historical background definition composition of microemulsion major goals advantages disadvantages macroemulsion vs microemulsion types of microemulsions preparation methods of microemulsions equipments used for the preparation of microemulsions formation of microemulsion factors affecting. Free trial download, try microsoft office 365 products. However, the situation of petroleum industries in many countries needs much concern in improving the oil recovery technique. Microsoft powerpoint is the best presentation software for meetings, industry talks and business proposals.