2 edition of Encyclopedia of surface-active agents found in the catalog.
Encyclopedia of surface-active agents
Jean Paul Sisley
|LC Classifications||TP990 S513 1961|
Surface Active Agents The term surfactant is a blend of surface active agent. Surfactants are usually organic compounds that are amphiphilic, meaning they contain both hydrophobic groups (their "tails") and hydrophilic groups (their "heads"). when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting. Surface active agents (usually referred to as surfactants) are amphipathic molecules consisting of a nonpolar hydrophobic portion, usually a straight or branched hydrocarbon or fluorocarbon chain Author: Tharwat Tadros.
Due to the specific structure of surfactants molecules they are applied in different areas of human activity (industry, household). After using and discharging from wastewater treatment plants as effluent stream, surface active agents (SAAs) are emitted to various elements of the environment (atmosphere, waters, and solid phases), where they can undergo numerous physic-chemical processes (e.g Cited by: SURFACE ACTIVE AGENTS A surface active agent (= surfactant) is a substance which lowers the surface tension of the medium in which it is dissolved, and/or the interfacial tension with other phases, and, accordingly, is positively adsorbed at the liquid/vapour and/or at other interfaces. The term surfactant is also applied correctly to sparingly.
Surface active agents — Detergents — Determination of cationic-active matter content — Part 2: Cationic-active matter of low molecular mass (between and ) ISO/TC Surface-Active Agents More information in Books or on Definition: Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics.
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Genre/Form: Encyclopedia: Additional Physical Format: Online version: Encyclopedia of surface-active agents. New York, Chemical Pub. [, ©]. Genre/Form: Dictionaries Encyclopedias: Additional Physical Format: Online version: Sisley, Jean Paul, Encyclopedia of surface-active agents.
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Encyclopedia of surface-active agents. Encyclopedia of Surface-Active Agents Volume 1. on *FREE* shipping on qualifying offers. Article Views are the COUNTER-compliant sum of full text article downloads since November (both PDF and HTML) across all institutions and : Cornelia T.
Snell. Open Library is an open, editable library catalog, building towards a web page for every book ever published. Surfactant encyclopedia by Martin M.
Pages: Catherine N. Mulligan, in Thermodynamics, Solubility and Environmental Issues, 1 INTRODUCTION. Surface active agents (surfactants) are amphiphilic compounds with two opposing portions, one part is hydrophilic and the other is hydrophobic .They reduce the free energy of the system by replacing the bulk molecules of higher energy at an interface.
surface-active agent[′sərfəs ¦aktiv ′ājənt] (materials) A soluble compound that reduces the surface tension of liquids, or reduces interfacial tension between two liquids or a liquid and a solid. Also known as surfactant.
surface-active agent 1. In unhardened mixtures of concrete, an additive which has the ability to modify the surface. Sodium sulphide, fat liquors, finishing agents, dye carriers to accelerate the dyeing or fixing of dye-stuffs and other products and preparations (dressings and mordents) of the kind used in the textile, paper, leather or like industries, not elsewhere specified or included besides fungicide, ucer G and organic surface active agents.
Surfactant, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties. In the dyeing of textiles, surfactants help the dye penetrate the fabric evenly. Learn more about surfactants in this article.
Soap Background Soap is a combination of animal fat or plant oil and caustic soda . When dissolved in water, it breaks dirt away from surfaces. Through the ages soap has been used to cleanse, to cure skin sores, to dye hair, and as a salve or skin ointment.
FERMENTATION FERMENTATION. Fermentation is one of the oldest known food preservation  techniques. Along with drying and salting, fermentation was a key method of extending the life of foods, allowing them to be available, and eaten safely, in times of scarcity or seasonal nonavailability.
"Volume 4 of the Encyclopedia of Emulsion Technology completes this unique and compact 4-volume work by extending the discussion of basic theory and applications featured in Volumes More importantly, this volume presents the latest developments on new applications in emulsion technology--introducing scientists and engineers to the most recent concepts.
Cite this entry as: () Surface-Active Agents. In: Tadros T. (eds) Encyclopedia of Colloid and Interface Science. Springer, Berlin, Heidelberg. A fundamental property of surface-active agents (surfactants) is to form aggregates, called micelles. The first-formed aggregates, just above the critical micelle concentration (CMC), are generally approximately spherical in shape, and the concentration where they start Author: Ramdas B.
Khomane, Bhaskar D. Kulkarni. Surface-active agents are one of the most commonly applied compounds in industrial, agricultural, and household activities, and after use a huge number of surface active agents (and/or their degradation products) are discarded to wastewater-treatment plants.
Surface-active agents are. Define surface-active agent. surface-active agent synonyms, surface-active agent pronunciation, surface-active agent translation, English dictionary definition of surface-active agent.
Encyclopedia. Tools. A; A; A; A; Language: surface-active; surface-active agent; surface-air; surface-assimilative; surface-effect ship; surfaceman. Encyclopedia of surface-active agents J. Sisley Accessible book, Protected DAISY, Congresses2 books Carroll L.
Oubre, 2 books Jürgen Falbe, 2 books International Congress on Surface Active Substances (4th Brussels), 2 books Dieter O. Hummel, 2 books David A. Sabatini. Surface-active agents (surfactants) are substances which, at low concentrations, adsorb onto the surfaces or interfaces of a system and alter the surface or interfacial free energy and the surface or interfacial tension.
This chapter focuses on the wide range of uses for surfactants in pharmaceutical products and : James Swarbrick. In addition, the adsorption of the cationic surface-active agents onto quartz surfaces was determined and the influence of the surface-active agents on the electrophoretic mobility of quartz particles examined.
Correlation of the experimental data obtained by various techniques enabled a mechanism to be suggested for the breaking of bitumen. surfactant: Definition Surfactant is a complex naturally occurring substance made of six lipids (fats) and four proteins that is produced in the lungs.
It can also be manufactured synthetically. Purpose Surfactant reduces the surface tension of fluid in the lungs and helps make the small air sacs in the lungs (alveoli) more stable.
This keeps.1. Many drugs are surface active 2. Emulsifying agents 3. Wetting agents 4. Solubilising agents 5. Detergents/disinfectants 6. Foaming/anti-foaming agents.The rights of agents against third persons on contracts, are, 1st, when the contract is in writing and made expressly with the agent, and imports to be a contract personally with him, although he may be known to act as an agent; as, for example, when a promissory note is given to the agent as such, for the benefit of his principal, and the.